Repair and Diagnosis (Single Page)
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Quick Lookups
Common Specs & Procedures
Electrical Component Locations
Fluids
Technical Bulletins
Tire Fitment
Wiring Diagrams- Using lemon2025'S System Wiring Diagrams
- Wiring Diagrams - 3.9L & 4.2L
- Wiring Diagram Symbols
- Connector Views
- Air Conditioning
- Air Suspension
- Anti-Lock Brake System
- Anti-Theft System
- Charging System
- Central Locking System
- Cigar Lighter/Clock
- Cooling Fans
- Cruise Control System
- ELECTROCHROMATIC Rear View Mirror
- Engine Performance
- Exterior Lights
- Fuse Details
- Ground Distribution
- Headlights (USA & CANADA)
- Horns
- Ignition & Shift Interlock
- Instrument Panel
- Interior Lights
- Memory Seat/Mirrors
- Multi-Function Unit
- Power Distribution
- Power Door Locks
- Power Mirrors
- Power Seats
- Power Windows
- Radio (USA)
- Rear Fog Lights
- Rear Window & Mirror Defogger
- Refrigerator
- Shift Interlock
- Starting & Charging
- Sun Roof
- Trailer Auxiliary Socket
- Windshield Heater
- Wiper/Washer
- Wiring Diagrams - Defender 90 & Discovery
- Generators & Regulators
- Starters
- Ground Distribution
- Power Distribution
- Electric Cooling Fans
- Anti-Lock Brake Systems
- Engine Performance
- Fuse Details
- Anti-Theft Systems
- Cruise Control Systems
- Window Defoggers & Heated Mirrors
- Instrument Panels
- Power Door Locks
- Power Mirrors
- Power Sun Roofs
- Power Windows
- Steering Column Switches
- Wiper/Washer Systems
- Headlight & Headlight Leveling Systems
- Exterior Lights
- Illumination/Interior Lights
- Warning Systems
- Multi-Function Unit Systems
- Shift Interlock Systems
- Back-Up Light Systems
- Blower Controls
- Compressor Controls
- Trailer Auxiliary Socket
- Accessories & Equipment
- Entertainment Systems - 3.9L & 4.2L
- Description & Operation
- Programming
- Trouble Shooting
- System Tests
- Notes
- Test A: Radio & Cassette Do Not Operate At All
- Test B: Radio Scans Past All Frequencies When In Seek Mode & Hiss Is Present Over Most Stations
- Test C: VF Display Intensity Does Not Dim When Headlights Are On
- Test D: One Or More (Not All) Speakers Do Not Operate
- Test E: Only Cd Changer Does Not Operate
- Test F: Subwoofer Does Not Operate
- Test G: Subwoofer Control Does Not Dim When Headlights Are On
- Removal & Installation
- Wiring Diagrams
- Gauges & Instrument Panels
- Instrument Panels - 3.9L & 4.2L
- Description & Operation
- Notes
- Instrument Panel
- Warning Lights & Indicators
- ABS Warning Light
- Air Suspension Indicator
- Brake Warning Light
- Charge Warning Light
- Direction Indicator
- ETC Warning Light
- Fasten Seat Belt Indicator
- Hazard Indicator
- Low Fuel Warning Indicator
- Main Beam Indicator
- Malfunction Indicator Lamp (Check Engine)
- Oil Pressure Warning Light
- Service Reminder Indicator
- SRS Indicators
- Trailer Indicator
- Transmission/Transfer Box Oil Temperature Warning Light
- Component Locations
- Trouble Shooting
- System Tests (Instrument Panel)
- System Tests (Warning Lights & Indicators)
- Notes
- Test A: Oil Pressure Warning Light Remains Illuminated With Oil Pressure Okay
- Test B: Check Engine Warning Light Does Not Operate
- Test C: Service Reminder Indicator Does Not Operate
- Test D: Brake Warning Light Does Not Operate With Brake Fluid Level Low
- Test E: Brake Warning Light Does Not Operate With Abs Problem
- Test F: Brake Warning Light Does Not Operate With Handbrake Applied
- Test G: Light Does Not Illuminate - Transmission/Transfer Box Oil Temperature Warning Light Illuminated As Bulb Test With Ignition Switch In Position III
- Test H: Transmission/Transfer Box Oil Temperature Warning Light Is Illuminated With Both Transfer Box Oil Temperature & Automatic Oil Temperature Okay
- Test I: Fasten Seat Belt Indicator Does Not Operate With Ignition On
- Removal & Installation
- Notes
- Circuit Board
- Clock & Bulb
- Coolant Temperature & Fuel Gauges
- Hazard Warning Switch & Bulb
- Instrument Cluster
- Instrument Cowl & Illumination Board
- Instrument Illumination & Warning Light Bulbs
- Instrument Panel Finisher
- Main Printed Circuit
- Radio
- Speedometer
- Speedometer Transducer
- Tachometer
- Warning Light Panel Printed Circuit Board
- Wiring Diagrams
- Description & Operation
- Instrument Panels - 3.9L & 4.2L
- Heated Glass/Defoggers
- Infotainment
- Entertainment Systems - 3.9L & 4.2L
- Description & Operation
- Programming
- Trouble Shooting
- System Tests
- Notes
- Test A: Radio & Cassette Do Not Operate At All
- Test B: Radio Scans Past All Frequencies When In Seek Mode & Hiss Is Present Over Most Stations
- Test C: VF Display Intensity Does Not Dim When Headlights Are On
- Test D: One Or More (Not All) Speakers Do Not Operate
- Test E: Only Cd Changer Does Not Operate
- Test F: Subwoofer Does Not Operate
- Test G: Subwoofer Control Does Not Dim When Headlights Are On
- Removal & Installation
- Wiring Diagrams
- Entertainment Systems - 3.9L & 4.2L
- Power Mirrors - 3.9L & 4.2L
- Steering Column Switches - 3.5L, 3.9L & 4.2L
- Description & Operation
- Component Tests
- Removal & Installation
- Notes
- Column Switch Illumination Bulb Replacement
- Hazard Warning Switch Bulb (1987-92)
- Hazard Warning Switch & Bulb (1993-Early 95)
- Headlight/Flasher Switch & Windshield Wash/Wipe Switch (1993-Early 95)
- Horns
- Ignition Starter Switch
- Ignition Starter Switch Bulb Replacement (1993-Early 95)
- Main Lighting Switch, Tailgate Programmed Wash/Wipe Switch
- Radiator Grille
- Steering Column Shroud
- Windshield Programmed Wipe Switch, High & Low Beam, Direction Indicators & Horn Switch (1987-92)
- Steering Column Lock Assembly (1993-Early 95)
- Wiring Diagrams
- Wiper/Washer Systems - 3.9L & 4.2L
- Identification
- Description & Operation
- Component Locations
- Trouble Shooting
- System Tests
- Notes
- Test A: Rear Wiper/Washer Does Not Operate (1993-94)
- Test B: Rear Wiper Does Not Operate But Washer Is Okay (1993-94)
- Test C: Washer Does Not Operate But Wiper Is Okay (1993-94)
- Test D: Wiper Runs With Rear/Wipe Wash Switch (X155) Off (1993-94)
- Test A: Wiper Does Not Operate (1995)
- Test B: Washer Does Not Operate (1995)
- Test C: Wiper Runs With Rear Wipe Switch (X221) Off (1995)
- Removal & Installation
- Notes
- Hood
- DECKER Panel
- Power Wash Pump
- Washer Reservoir
- Windshield Washer Pump & Tailgate Glass Washer Pump
- Windshield Washer Jets
- Windshield Washer Tubes
- Wiper Arms (Windshield)
- Wiper Arm (Tailgate)
- Wiper Blades (Windshield & Tailgate)
- Windshield Wiper Motor, Linkage & Wheel Knurls
- Tailgate Washer Jet
- Tailgate Wiper Motor
- Headlamp Power Wash Jet
- Power Wash Hose
- Heated Windshield Washer Jets & Thermostat
- Main Lighting Switch, Rear Windshield Programmed Wash/Wipe Switch
- Windshield Programmed Wipe Switch, High & Low Beam, Direction Indicators & Horn Switch
- Wiring Diagrams
- Entertainment Systems - 3.9L & 4.2L
- Body & Frame
- Brakes
- Mechanical - Hydraulic
- Disc Brakes
- Description
- Depressurizing Brake System
- Bleeding Brake System
- Adjustments
- Servicing
- Removal & Installation
- Overhaul
- Torque Specifications
- Disc Brake Specifications
- Disc Brakes
- Mechanical - Hydraulic
- Drivelines & Axles
- Differentials & Drive Axles
- Differentials & Axle Shafts - Front - 3.9L & 4.2L
- Axle Ratio & Identification
- Description & Operation
- Lubrication
- Trouble Shooting
- Removal & Installation
- Overhaul
- Torque Specifications
- Differentials & Axle Shafts - Front - 3.9L & 4.2L
- Driveshaft & Universal Joints
- Differentials & Drive Axles
- Electrical
- Charging Systems
- Component Locations
- Fuses & Circuit Breakers - 3.9L & 4.2L
- Identification
- Notes
- Fuse Box
- Relays
- Notes
- Closure Panel
- Flasher/Hazard, Foglamp & Sunroof Relays
- Steering Column Mounted Relays
- A/C & Heater, Compressor Clutch, A/C & Heater Load, Condenser Fan & A/C Diode Pack Relays
- Seat Adjustment Relays
- EFI, Fuel Pump, Condenser Fan Timer Unit & Cruise Control Relays
- Front & Rear Window & Gear Shift Illumination Relays
- Component Locations
- Identification
- Gauges
- Instrument Panels - 3.9L & 4.2L
- Description & Operation
- Notes
- Instrument Panel
- Warning Lights & Indicators
- ABS Warning Light
- Air Suspension Indicator
- Brake Warning Light
- Charge Warning Light
- Direction Indicator
- ETC Warning Light
- Fasten Seat Belt Indicator
- Hazard Indicator
- Low Fuel Warning Indicator
- Main Beam Indicator
- Malfunction Indicator Lamp (Check Engine)
- Oil Pressure Warning Light
- Service Reminder Indicator
- SRS Indicators
- Trailer Indicator
- Transmission/Transfer Box Oil Temperature Warning Light
- Component Locations
- Trouble Shooting
- System Tests (Instrument Panel)
- System Tests (Warning Lights & Indicators)
- Notes
- Test A: Oil Pressure Warning Light Remains Illuminated With Oil Pressure Okay
- Test B: Check Engine Warning Light Does Not Operate
- Test C: Service Reminder Indicator Does Not Operate
- Test D: Brake Warning Light Does Not Operate With Brake Fluid Level Low
- Test E: Brake Warning Light Does Not Operate With Abs Problem
- Test F: Brake Warning Light Does Not Operate With Handbrake Applied
- Test G: Light Does Not Illuminate - Transmission/Transfer Box Oil Temperature Warning Light Illuminated As Bulb Test With Ignition Switch In Position III
- Test H: Transmission/Transfer Box Oil Temperature Warning Light Is Illuminated With Both Transfer Box Oil Temperature & Automatic Oil Temperature Okay
- Test I: Fasten Seat Belt Indicator Does Not Operate With Ignition On
- Removal & Installation
- Notes
- Circuit Board
- Clock & Bulb
- Coolant Temperature & Fuel Gauges
- Hazard Warning Switch & Bulb
- Instrument Cluster
- Instrument Cowl & Illumination Board
- Instrument Illumination & Warning Light Bulbs
- Instrument Panel Finisher
- Main Printed Circuit
- Radio
- Speedometer
- Speedometer Transducer
- Tachometer
- Warning Light Panel Printed Circuit Board
- Wiring Diagrams
- Description & Operation
- Instrument Panels - 3.9L & 4.2L
- Starters - 3.9L & 4.2L
- Wiring Diagrams
- Using lemon2025'S System Wiring Diagrams
- Wiring Diagrams - 3.9L & 4.2L
- Wiring Diagram Symbols
- Connector Views
- Air Conditioning
- Air Suspension
- Anti-Lock Brake System
- Anti-Theft System
- Charging System
- Central Locking System
- Cigar Lighter/Clock
- Cooling Fans
- Cruise Control System
- ELECTROCHROMATIC Rear View Mirror
- Engine Performance
- Exterior Lights
- Fuse Details
- Ground Distribution
- Headlights (USA & CANADA)
- Horns
- Ignition & Shift Interlock
- Instrument Panel
- Interior Lights
- Memory Seat/Mirrors
- Multi-Function Unit
- Power Distribution
- Power Door Locks
- Power Mirrors
- Power Seats
- Power Windows
- Radio (USA)
- Rear Fog Lights
- Rear Window & Mirror Defogger
- Refrigerator
- Shift Interlock
- Starting & Charging
- Sun Roof
- Trailer Auxiliary Socket
- Windshield Heater
- Wiper/Washer
- Wiring Diagrams - Defender 90 & Discovery
- Generators & Regulators
- Starters
- Ground Distribution
- Power Distribution
- Electric Cooling Fans
- Anti-Lock Brake Systems
- Engine Performance
- Fuse Details
- Anti-Theft Systems
- Cruise Control Systems
- Window Defoggers & Heated Mirrors
- Instrument Panels
- Power Door Locks
- Power Mirrors
- Power Sun Roofs
- Power Windows
- Steering Column Switches
- Wiper/Washer Systems
- Headlight & Headlight Leveling Systems
- Exterior Lights
- Illumination/Interior Lights
- Warning Systems
- Multi-Function Unit Systems
- Shift Interlock Systems
- Back-Up Light Systems
- Blower Controls
- Compressor Controls
- Trailer Auxiliary Socket
- Engine Mechanical
- Accessory Drive Belts
- Electric Cooling Fans - 3.5L, 3.9L & 4.2L
- Cooling System (Mechanical)
- Mechanical
- 3.9L & 4.2L V8
- Engine Identification
- Bleeding Cooling System
- Oil Service
- Adjustments
- Trouble Shooting
- Removal & Installation (With Engine In Vehicle)
- Notes
- Depressurizing Fuel System
- Engine
- Intake Manifold
- Exhaust Manifold
- Cylinder Heads & Gaskets
- Rocker Cover
- Rocker Shafts
- Hydraulic Tappets
- Crankshaft Pulley Assembly
- Timing Gear Cover Oil Seal
- Crankshaft Rear Oil Seal
- Timing Gear Cover Gasket
- Timing Chain & CHAINWHEELS
- Flex-Plate & Ring Gear
- Hood
- A/C Compressor
- Air Cleaner Element
- Air Cleaner Assembly
- Drive Belt
- Mass Air Flow Sensor
- Battery
- Distributor
- Engine UNDERTRAY
- Generator
- Plenum Chamber
- Radiator/Oil Coolers
- Ram Housing
- Viscous Coupling
- Removal & Installation (With Engine Removed)
- Overhaul
- Engine Oiling System
- Torque Specifications
- Engine Specifications
- Special Tools
- 3.9L V8
- Engine Identification
- Adjustments
- Removal & Installation
- Overhaul
- Engine Oiling
- Torque Specifications
- Engine Specifications
- General Engine Specifications
- Crankshaft, Main & Connecting Rod Bearings Specifications
- Connecting Rods Specifications
- Pistons, Pins & Rings Specifications
- Cylinder Block Specifications
- Valves & Valve Springs Specifications
- Cylinder Head Specifications
- Camshaft Specifications
- FLEXPLATE & Flywheel Specifications
- 3.9L & 4.2L V8
- Starters - 3.9L & 4.2L
- Engine Performance
- Adjustment
- Application
- Emissions
- Emission Applications
- Emission Control Abbreviations
- State Emission Standards - Diesel
- State Emission Standards - Gas
- ALASKA
- ARIZONA
- CALIFORNIA
- Colorado
- CONNECTICUT
- DELAWARE
- District Of COLUMBIA
- GEORGIA
- IDAHO
- ILLINOIS
- INDIANA
- KENTUCKY
- MARYLAND
- MASSACHUSETTS
- MISSOURI
- NEVADA
- New Jersey
- New MEXICO
- New YORK
- North CAROLINA
- OHIO
- OREGON
- PENNSYLVANIA
- RHODE Island
- TENNESSEE
- TEXAS
- UTAH
- VIRGINIA
- WASHINGTON
- WISCONSIN
- U. S. EPA ASM2525 & ASM5015 Start-Up Emission Standards
- U. S. EPA Revised Final ASM Emission Standards (ASM5015 & ASM2525)
- U.S. EPA Im240 Emission Standards
- Remove, Overhaul & Install
- Engine Controls - Removal, Overhaul & Installation - 3.9L & 4.2L
- Introduction
- Air Induction Systems
- Computerized Engine Controls
- Engine Sensors & Switches
- Modules, Motors, Relays & Solenoids
- Cooling System
- Ignition Systems
- Fuel Systems
- Depressurizing The Fuel System
- Fuel Filter
- Fuel Pressure Regulator
- FUEL PUMP (3.9L V8 - 1990 & Defender 110)
- FUEL PUMP/SENDER UNIT (3.9L & 4.2L V8 - 1991-EARLY 1995; except Defender 110)
- Fuel Rails & Injectors (3.9L V8 - 1990-92)
- Fuel Rails & Injectors (3.9L & 4.2L V8 - 1993-Early 1995)
- Fuel Tank (3.9L V8 - 1990)
- Throttle Cable
- Throttle Levers & Throttle Valve
- Throttle Position (TP) Sensor
- Emission Systems & Sub-Systems
- Positive Crankcase Ventilation Air Intake Filter
- Positive Crankcase Ventilation Breather Filter
- Adsorption (Charcoal) Canister (3.9L V8 - 1990-92)
- Adsorption (Charcoal) Canister (3.9L & 4.2L V8 - 1993-Early 1995)
- Fuel Expansion Tank (3.9L V8 - 1990)
- Adsorption (Charcoal) Canister Purge Valve
- Vapor Separator (3.9L & 4.2L V8 - 1991-Early 1995)
- Torque Specifications
- Engine Controls - Removal, Overhaul & Installation - 3.9L & 4.2L
- Sensor Range Charts
- Engine Controls - Service & Adjustment Specifications - 3.9L & 4.2L
- System
- Engine Controls - Basic Diagnostic Procedures - 3.5L, 3.9L & 4.2L
- Engine Controls - Self-Diagnostics - 3.9L & 4.2L
- Introduction
- Self-Diagnostic System
- Summary
- Diagnostic Trouble Code Definitions
- Component Locations
- Connector Identification
- Diagnostic Tests
- Notes
- EFI Warning Light Inoperative
- Engine Control Module Power & Ground Test
- No Diagnostic Trouble Code Test
- Code 02: Reconnected ECM
- Code 12: Mass Airflow Sensor Fault
- Code 14: Coolant Temperature Sensor Fault
- Code 15: Fuel Temperature Sensor Fault
- Code 17: Throttle Position Sensor Fault
- Code 18: Throttle Position Sensor Input High/Mass Airflow Sensor Output Low
- Code 19: Throttle Position Sensor Input Low/Mass Airflow Sensor High Output
- Code 21: Tune Select Resistor Fault
- Code 23: Fuel Supply Fault
- Code 28: Engine Air Leak
- Code 29: ECM Memory Fault
- Code 34: Left Bank Injector Fault (Bank "A")
- Code 36: Right Bank Injector Fault (Bank "B")
- Code 40: Left Bank Misfire (Bank "A")
- Code 44: Left Bank Lambda (Oxygen) Sensor (Bank "A")
- Code 45: Right Bank Lambda (Oxygen) Sensor (Bank "B")
- Code 48: Idle Air Control Valve Fault
- Code 50: Right Bank Misfire (Bank "B") Fault
- Code 59: Group Faults 23/28
- Code 68: Vehicle Speed Sensor Input Fault
- Code 69: Starter Inhibit/Reverse Switch Fault
- Code 88: Canister Purge Valve Leak
- Engine Controls - System & Component Testing - 3.9L & 4.2L
- Engine Controls - Trouble Shooting - No Codes
- Introduction
- Symptoms
- Symptom Diagnosis
- Engine Fails To Crank In Park Or Neutral (A/T)
- Engine Fails To Crank (M/T)
- Engine Cranks But Fails To Start
- Engine Runs At High Rpm But Will Not Idle
- Engine Idle Speed Erratic, Engine Starts But Stops Immediately
- Engine Stalls & Engine Misfires Or Hesitates
- Engine Lacks Power/Poor Performance
- Engine Backfires Into Exhaust System
- Engine Backfires Into Inlet System
- Engine Internal Mechanical Noises (Single Or Multiple, Light Tapping Noise, Particularly When Cold)
- Engine Internal Mechanical Noises (Heavy Knocking Noise, Particularly On Load And When Engine Is Hot)
- Heavy Rumbling Noise (Particularly During Hard Acceleration)
- INTERMITTENTS
- Engine Controls - Trouble Shooting - No Codes - 3.9L & 4.2L
- Introduction
- Symptoms
- Symptom Diagnosis
- Engine Fails To Crank In Park Or Neutral
- Engine Cranks But Fails To Start
- Engine Runs At High Rpm But Will Not Idle
- Engine Idle Speed Erratic, Engine Starts But Stops Immediately
- Engine Stalls & Engine Misfires Or Hesitates
- Engine Lacks Power/Poor Performance
- Engine Backfires Into Exhaust System
- Engine Backfires Into Inlet System
- Engine Internal Mechanical Noises
- Heavy Rumbling Noise (Particularly During Hard Acceleration)
- INTERMITTENTS
- Engine Performance Self-Diagnostics
- Introduction
- Self-Diagnostic System
- Summary
- Diagnostic Trouble Code Definitions
- Component Locations
- Connector Identification
- Diagnostic Tests
- Notes
- Check Engine Warning Light Inoperative
- Engine Control Module Power & Ground Test
- No Diagnostic Trouble Code Test
- Code 02: Reconnected ECM Fault
- Code 12: Mass Airflow Sensor Fault
- Code 14: Engine Coolant Temperature Sensor Fault
- Code 15: Fuel Temperature Sensor Fault
- Code 17: Throttle Position Sensor Fault
- Code 18: Throttle Position Sensor Input High/Mass Airflow Sensor Input Low Fault
- Code 19: Throttle Position Sensor Input Low/Mass Airflow Sensor Input High Fault
- Code 21: Tune Select Resistor Fault
- Code 23: Fuel Supply Fault
- Code 28: Engine Air Leak Fault
- Code 29: ECM Memory Fault
- Code 34: Left Bank Injector Fault (Bank "A")
- Code 36: Right Bank Injector Fault (Bank "B")
- Code 40: Left Bank Misfire Fault (Bank "A")
- Code 44: Left Bank Heated Oxygen Sensor Fault (Bank "A")
- Code 45: Right Bank Heated Oxygen Sensor Fault (Bank "B")
- Code 48: Idle Air Control Valve Fault
- Code 50: Right Bank Misfire Fault (Bank "B")
- Code 59: Group Faults 23/28
- Code 68: Vehicle Speed Sensor Input Fault
- Code 69: Park/Neutral Position Switch Fault
- Code 88: Canister Purge Valve Leak Fault
- Wiring Diagrams
- Testing & Diagnosis
- Engine Controls - Basic Diagnostic Procedures - 3.5L, 3.9L & 4.2L
- Engine Controls - Self-Diagnostics - 3.9L & 4.2L
- Introduction
- Self-Diagnostic System
- Summary
- Diagnostic Trouble Code Definitions
- Component Locations
- Connector Identification
- Diagnostic Tests
- Notes
- EFI Warning Light Inoperative
- Engine Control Module Power & Ground Test
- No Diagnostic Trouble Code Test
- Code 02: Reconnected ECM
- Code 12: Mass Airflow Sensor Fault
- Code 14: Coolant Temperature Sensor Fault
- Code 15: Fuel Temperature Sensor Fault
- Code 17: Throttle Position Sensor Fault
- Code 18: Throttle Position Sensor Input High/Mass Airflow Sensor Output Low
- Code 19: Throttle Position Sensor Input Low/Mass Airflow Sensor High Output
- Code 21: Tune Select Resistor Fault
- Code 23: Fuel Supply Fault
- Code 28: Engine Air Leak
- Code 29: ECM Memory Fault
- Code 34: Left Bank Injector Fault (Bank "A")
- Code 36: Right Bank Injector Fault (Bank "B")
- Code 40: Left Bank Misfire (Bank "A")
- Code 44: Left Bank Lambda (Oxygen) Sensor (Bank "A")
- Code 45: Right Bank Lambda (Oxygen) Sensor (Bank "B")
- Code 48: Idle Air Control Valve Fault
- Code 50: Right Bank Misfire (Bank "B") Fault
- Code 59: Group Faults 23/28
- Code 68: Vehicle Speed Sensor Input Fault
- Code 69: Starter Inhibit/Reverse Switch Fault
- Code 88: Canister Purge Valve Leak
- Engine Controls - System & Component Testing - 3.9L & 4.2L
- Engine Controls - Trouble Shooting - No Codes
- Introduction
- Symptoms
- Symptom Diagnosis
- Engine Fails To Crank In Park Or Neutral (A/T)
- Engine Fails To Crank (M/T)
- Engine Cranks But Fails To Start
- Engine Runs At High Rpm But Will Not Idle
- Engine Idle Speed Erratic, Engine Starts But Stops Immediately
- Engine Stalls & Engine Misfires Or Hesitates
- Engine Lacks Power/Poor Performance
- Engine Backfires Into Exhaust System
- Engine Backfires Into Inlet System
- Engine Internal Mechanical Noises (Single Or Multiple, Light Tapping Noise, Particularly When Cold)
- Engine Internal Mechanical Noises (Heavy Knocking Noise, Particularly On Load And When Engine Is Hot)
- Heavy Rumbling Noise (Particularly During Hard Acceleration)
- INTERMITTENTS
- Engine Controls - Trouble Shooting - No Codes - 3.9L & 4.2L
- Introduction
- Symptoms
- Symptom Diagnosis
- Engine Fails To Crank In Park Or Neutral
- Engine Cranks But Fails To Start
- Engine Runs At High Rpm But Will Not Idle
- Engine Idle Speed Erratic, Engine Starts But Stops Immediately
- Engine Stalls & Engine Misfires Or Hesitates
- Engine Lacks Power/Poor Performance
- Engine Backfires Into Exhaust System
- Engine Backfires Into Inlet System
- Engine Internal Mechanical Noises
- Heavy Rumbling Noise (Particularly During Hard Acceleration)
- INTERMITTENTS
- Engine Performance Self-Diagnostics
- Introduction
- Self-Diagnostic System
- Summary
- Diagnostic Trouble Code Definitions
- Component Locations
- Connector Identification
- Diagnostic Tests
- Notes
- Check Engine Warning Light Inoperative
- Engine Control Module Power & Ground Test
- No Diagnostic Trouble Code Test
- Code 02: Reconnected ECM Fault
- Code 12: Mass Airflow Sensor Fault
- Code 14: Engine Coolant Temperature Sensor Fault
- Code 15: Fuel Temperature Sensor Fault
- Code 17: Throttle Position Sensor Fault
- Code 18: Throttle Position Sensor Input High/Mass Airflow Sensor Input Low Fault
- Code 19: Throttle Position Sensor Input Low/Mass Airflow Sensor Input High Fault
- Code 21: Tune Select Resistor Fault
- Code 23: Fuel Supply Fault
- Code 28: Engine Air Leak Fault
- Code 29: ECM Memory Fault
- Code 34: Left Bank Injector Fault (Bank "A")
- Code 36: Right Bank Injector Fault (Bank "B")
- Code 40: Left Bank Misfire Fault (Bank "A")
- Code 44: Left Bank Heated Oxygen Sensor Fault (Bank "A")
- Code 45: Right Bank Heated Oxygen Sensor Fault (Bank "B")
- Code 48: Idle Air Control Valve Fault
- Code 50: Right Bank Misfire Fault (Bank "B")
- Code 59: Group Faults 23/28
- Code 68: Vehicle Speed Sensor Input Fault
- Code 69: Park/Neutral Position Switch Fault
- Code 88: Canister Purge Valve Leak Fault
- Wiring Diagrams
- Theory and Operation
- Vacuum Diagrams
- Engine Performance Wiring Diagrams - 3.5L, 3.9L & 4.2L
- General Information
- Abbreviations
- Basic Trouble Shooting
- Basic Trouble Shooting - General Information
- Commonly Used Abbreviations - General Information
- Emission Control Abbreviations
- Engine Performance - Trouble Shooting - General Information
- Brakes
- Anti-Lock Brake Safety Precautions - General Information
- Map - Brake Systems
- Brake Systems
- Notes
- Map Standards Of Service
- The Map Process - Overview
- The Map Process - Overview Of Service Requirements And Suggestions
- Accelerometers
- Accumulators
- Anchor Pins
- Anti-Lock Brake Control Assembly(Module)
- Anti-Lock Brake Controller
- Anti-Lock Brake Systems
- Axle Seal
- Backing Plates
- Bleeder Screw
- Brake Abs Active Light (Blue)
- Brake Fluid
- Brake Friction Material
- Brake On - Off Switch
- Brake Pads
- Brake Pedals
- Brake Shoe Hardware
- Brake Shoes
- Brake Stoplight Switches
- Brake Warning Light (Amber)
- Brake Warning Light (Red)
- Bulb Sockets
- Bulbs And LEDS
- Caliper Hardware
- Caliper Mounting Pin
- Caliper Piston
- Caliper Shim
- Caliper Slider Pin (Bolt) Dust Boot
- Caliper Slider Pin (Bolt)
- Calipers
- Combination Valve
- Controllers
- Digital Ratio Axle Controllers And Buffers (Drab And Dram)
- Disable Switches
- Drums
- Electrical Brake Pumps
- Electrical Park Motor
- Electrical Pumps And Motors
- Electro-Magnetic Interference
- Electronic Brake Control Modulator
- Electronic Brake Distribution
- Electronic Brake Traction Control Module
- Electronic Controllers
- Electronic Traction Control
- External Brake Cable
- Flow Control Valve
- Fluid Level Sensor Switches
- Fluid
- Four Wheel Drive Switches
- Friction Material
- G Sensors
- Gaskets
- Gravitational Switches
- Grease Seal
- Height Sensing Proportioning Valve
- High Pressure Accumulator
- Hoses
- Hub
- Hydraulic Control Unit
- Hydraulic Modulators
- Hydro-Boosters
- Hydro-Electric Boosters (POWERMASTER)
- Ignition Disable Switches
- Lamp Driver Relay
- Lateral Acceleration Switches
- LEDS
- Lenses
- Low Pressure Accumulator
- Lug Nut
- Master Cylinder Cover Gasket
- Master Cylinders
- Modulators
- Motor Pack
- Motors
- Pads
- Parking Brake Cable
- Parking Brake Mechanism
- Parking Brake Shoes
- Parking Brake Switches
- Parking Brake Systems
- Pedal Travel Switches
- Pedals
- Power Distribution Center
- POWERMASTER
- Pressure Differential Switches
- Pressure Switches
- Pressure Transducers
- Proportioning Valve
- Pumps
- Relays
- RELUCTOR (Speed) Ring
- Rotors
- Self-Adjusting Systems
- Shoe Hardware
- Shoes
- Sockets
- Speed Sensor (RELUCTOR) Ring
- Speed Sensors (Electronic Wheel And Vehicle)
- Star Wheel
- Steel Brake Lines
- Stoplight Switches
- Stroke Sensor
- Switches
- Tires
- Tone Ring
- Toothed Rings (Tone Wheel)
- Traction Control System (TCS)
- Transfer Tubes
- Vacuum Boosters
- Vacuum Hoses
- Valves
- Wear Indicator
- Wheel Attachment Hardware
- Wheel Bearings, Races And Seals
- Wheel Cylinders
- Wiring Harnesses
- Yaw Rate Sensor
- Brake System CHECKSHEET
- Reason Code Explanation
- Automotive Terminology & Definitions
- Brake Systems
- Map - Routine Inspection Reference Guide
- Routine Inspection Reference Guide
- Notes
- Map Standards Of Service
- The Map Process - Overview
- The Map Process - Overview Of Service Requirements And Suggestions
- Maintenance Overview
- Antifreeze/Coolant
- Visual Inspection
- Radiator Cap Test
- Engine Fan
- Cooling System Power Flush And Refill
- Belts (Except Timing Belts)
- Belt TENSIONER
- Automatic Transmission Fluid
- Automatic Transmission Fluid Exchange & Filter Replacement
- Engine Oil
- Air Filters
- Cabin Air Filter
- Brake Fluid
- Battery
- Battery Cables
- Power Steering
- Power Steering Fluid
- Wiper Blades
- Routine Inspection CHECKSHEET
- Routine Inspection - UICS
- Brake Systems
- Drivetrain And Transmission
- Notes
- Automatic Transmission Fluid
- Clutch Master Cylinders
- Cooler Lines
- Coolers
- Differential Fluid
- Drain Plugs And Gaskets
- Filters And Screens
- Fluids And Lubricants
- Hoses, Lines, And Tubes
- Hydraulic Fluid
- Lubricants
- Manual Transmission Fluid
- Mounts (Engine, Transaxle And Transmission)
- Transfer Case Fluid
- Vacuum Hoses
- Electrical Systems
- Engine Performance And Maintenance
- Notes
- Accessory Belts
- Air Filter Elements
- Air Filter Gaskets
- Air Filter Housings And Gaskets
- Air Pump Belts
- Batteries
- Battery Connectors
- Belt Idler Assemblies (Accessory And Cam Belts)
- Belt TENSIONERS (Accessory And Cam Belt)
- Chemical Engine DECARBONIZATION
- Combustion Chamber Cleaning
- Coolant Recovery Tanks
- Coolant
- Distributor Caps
- Distributor Rotors
- Engine Cooling Systems
- Engine DECARBONIZATION
- Engine Oil Drain Plugs And Gaskets
- Engine Oil Filters And Canisters
- Engine Oil
- Fuel Filters
- Fuel Injector Cleaning
- Fuel Injectors
- Fuel System Cleaning Service
- Hose Clamps
- Hose Connectors
- Hose Couplers
- Hoses And Tubes (Fuel Lines, Radiator, Vacuum, By-Pass, Heater, Recovery Tank And Oil Coolers)
- Ignition Wires (Secondary)
- Intake Cleaning
- O2 Sensors
- PCV Breather Elements
- PCV Valves
- Radiator Caps And Pressurized Expansion Tank Caps
- Spark Plugs
- Thermostats And Housings
- Throttle Body Cleaning
- Timing Belts
- Vacuum Hoses, Tubes And Connections (Non-Metallic)
- Exhaust Systems
- Heating, Ventilation And Air Conditioning Systems
- Steering And Suspension, Wheel Alignment, Wheels And Tires
- Wheel & Tire Supplement
- Reason Code Explanation
- Automotive Terminology & Definitions
- Routine Inspection Reference Guide
- Check Lists
- Computer Relearn Procedures
- Driveline/Axles
- Drive Axle Noise Diagnosis - General Information
- Gear Tooth Contact Patterns - General Information
- Map - Drive Train & Transmission
- Drive Train & Transmission Systems
- Drivetrain And Transmission
- Notes
- Actuators (Electrical)
- Actuators (Vacuum)
- Automatic Transmission / Transaxle Assemblies/CVTS
- Automatic Transmission Fluid
- Axles
- Bearings And Races
- Bell Cranks
- Bell Housings
- Bushings (External)
- Cables (Speedometer)
- Cables (TV, Detent And Shift)
- Carrier Bearings
- Clutch Cables And Cable Housings
- Clutch Discs (Manual Transmissions)
- Clutch Forks
- Clutch Linkages (Mechanical)
- Clutch Master Cylinders
- Clutch Pedals
- Clutch Pivots
- Clutch Pressure Plates
- Clutch Release Bearings
- Clutch Slave Cylinders (Concentric)
- Clutch Slave Cylinders (Conventional Or External)
- Companion Flanges
- Connectors
- Cooler Bypass Valves
- Cooler Lines
- Coolers
- CV Joints
- Differential And Final Drive Assemblies
- Differential Fluid
- Dip Stick Tubes
- Dip Sticks (Fluid Level Indicators)
- Dowel Pins, Guides And Pilot Holes
- Drain Plugs And Gaskets
- Drive Shaft Flanges
- Drive Shafts And Half Shafts
- Dust Boots
- Engine Mounts
- Exciter Rings
- Filler Tubes
- Filters And Screens
- Flanges
- Flex Plates
- Fluid Level Indicators
- Fluids And Lubricants
- Flywheels
- Force Motors
- Gaskets
- Guides
- Half Shafts
- Hoses, Lines, And Tubes
- Housings (Bell, Case, Tail(Extension) And Auxiliary)
- Hydraulic Fluid
- Intermediate Shaft Support Bearings
- Key Interlock Systems
- Limited Slips
- Lines
- Linkages (External)
- Locking Hub Assemblies
- Locking Hub Control Knobs
- Lubricants
- Manual Transmission Fluid
- Manual Transmission/Transaxle Assemblies
- Metal Clad Seals
- METALASTIC Joints
- Modulator Pins
- Modulators
- Mounts (Engine, Transaxle And Transmission)
- Odometer Drives (Mechanical)
- Odometer Heads (Mechanical)
- Oil Pans
- Pans
- Pilot Holes
- Pressure Plates
- Pressure Switches
- Races
- Rubber Joints (METALASTIC)
- Screens
- Seals (Metal Clad)
- Seals
- Selector Interlock Systems
- Sensors
- Servos
- Shift Interlock Systems (Selector And Key Interlock Systems)
- Side Covers
- Slip Yokes
- Solenoids
- Speed Sensors (Electronic Wheel And Vehicle)
- Speedometer- Driven Gear Housing
- Speedometer/Odometer Drives (Mechanical)
- Speedometer/Odometer Heads (Mechanical)
- Speedometers/Odometers (Electronic)
- Switches
- Tone Wheels
- Toothed Rings (Tone Wheel)
- Torque Converters
- Transaxle Mounts
- Transducers (Transmission)
- Transfer Case Assemblies
- Transfer Case Fluid
- Transmission Coolers
- Transmission Mounts
- Transmission Pans
- Transmission Range Indicators (PRNDL)
- Tubes
- Universal Joints (CARDAN Or Cross Type)
- Vacuum Controls
- Vacuum Hoses
- Vacuum Motors
- Vacuum-Operated Switches
- Vehicle Speed Sensors
- Vents
- Vibration Dampers
- Wheel Attachment Hardware
- Wheel Speed Sensors
- Wiring Harnesses And Connectors
- Yokes And Slip Yokes
- Reason Code Explanation
- Automotive Terminology & Definitions
- Trouble Shooting - Clutches - General Information
- Electrical
- Map - Electrical Systems
- Electrical Systems
- Notes
- Map Standards Of Service
- The Map Process - Overview
- The Map Process - Overview Of Service Requirements And Suggestions
- Actuator Motors (Electric)
- Actuator Motors (Vacuum)
- Air Bags
- Alternators And Generators
- Amplifiers
- Antennas
- Batteries
- Battery Cables, Wires And Connectors
- Battery Cables
- Battery Trays And Hold Down Hardware
- Battery Wires
- Belts
- Bulb Sockets
- Bulbs, Sealed Beams And LEDS
- Cd Players
- Cigarette Lighter Assemblies
- Circuit Breakers
- Clutch Switches
- Connectors
- Control Modules
- Cruise Control Brake Switches
- Cruise Control Cables
- Cruise Control Clutch Switches
- Cruise Control Linkages And Cables
- Cruise Control Reservoirs
- Cruise Control Tubes
- Cruise Control Vacuum Dump Release Valves
- Cruise Control Vacuum Hoses, Tubes And
- Cruise Control Vehicle Speed Sensors
- Defoggers
- Defrosters
- Delays
- Dimmers
- Electric Heaters
- Equalizers
- Fuse Blocks
- Fuse Boxes And Blocks
- Fuses, Fusible Links And Circuit Breakers
- Fusible Links
- Gauges
- Generators
- Ground Cables And Straps
- Ground Straps
- Headlight Adjusters
- Heating Elements (Defrosters, Defoggers, Electric Heaters And Seats)
- Horns And Sirens
- Ignition Switches
- Indicator Lights
- Keyless Entry Keypads And Transmitters
- Keyless Entry Transmitters
- LEDS
- Lenses
- Microphones
- Mirrors (ELECTROCHROMATIC And Heated)
- Motors
- Neutral Safety Switches
- Odometers, Speedometers And Tachometers (Cable Driven)
- Odometers
- Power Distribution Center
- Pulleys
- Receivers, Amplifiers, Equalizers And Sub-Woofer Volume Controls
- Relay Boxes
- Relays
- Sealed Beams
- Seat Heaters
- Security Alarm Sensors
- Sirens
- Solenoids
- Speakers And Microphones
- Speedometer And Tachometer Linkages And Cables
- Speedometer Cables
- Speedometers
- Starters
- Sub-Woofer Volume Control
- Switches
- Tachometer Cables
- Tachometers
- Tape Players And Cd Players
- TENSIONERS
- Timers
- Transceivers
- Transducers
- Vacuum Accumulators (Reservoirs)
- Voltage Regulators
- Washer Fluid Level Senders
- Washer Pumps
- Wiper Arms And Blades
- Wiper Blades
- Wiper Hoses And Nozzles
- Wiper Linkages
- Wiper Nozzles
- Wiper Pump Reservoirs
- Wiring Harnesses And Connectors
- Battery, Starting & Charging System CHECKSHEET
- Reason Code Explanation
- Automotive Terminology & Definitions
- Electrical Systems
- Using lemon2025'S System Wiring Diagrams
- Map - Electrical Systems
- Engine
- Engine Overhaul Procedures - General Information
- * Please Read This First *
- Description
- Engine Identification
- Inspection Procedures
- Cleaning Procedures
- Component Cleaning
- Cylinder Head Replacement
- Cylinder Head Overhaul
- Pistons, Connecting Rods & Bearings
- Crankshaft & Main Bearings
- Camshaft
- Timing Chains & Belts
- Timing Gears
- Oil Pump
- Break-In Procedure
- General Cooling System Service - General Information
- Engine Overhaul Procedures - General Information
- Engine Performance
- Electrostatic Discharge Warning - General Information
- Engine Performance Diagnostic Routine Outline - General Information
- Engine Performance Safety Precautions
- Map - Engine Performance & Maintenance
- Engine Performance And Maintenance (Including Exhaust Systems)
- Engine Performance & Maintenance CHECKSHEET
- Engine Performance And Maintenance
- Notes
- Accelerator Pedal Position Sensor
- Accessory Belts
- Accessory Pulleys
- Air Conditioning Cycling Switches
- Air Conditioning Pressure Sensors
- Air Ducts And Tubes
- Air Filter Elements
- Air Filter Gaskets
- Air Filter Housings And Gaskets
- Air Fuel Ratio Sensors
- Air Injection Control Solenoids
- Air Plenums
- Air Pump Belts
- Air Pumps (Electric Driven)
- Air Tubes
- Aspirator, Check And DECEL Valves
- Baffles
- Ballast Primary Supply Resistor Wires
- Ballast Resistors And Primary Supply Resistors
- Barometric Pressure Sensors
- Batteries
- Battery Cables, Wires And Connectors
- Battery Connectors
- Battery Trays And Hold Down Hardware
- Battery Wires
- Belt Idler Assemblies (Accessory And Cam Belts)
- Belt TENSIONERS (Accessory And Cam Belt)
- Belt-Driven Air Pumps
- Boost Control Mechanism
- Camshaft Position Sensors
- Carburetors And Chokes
- Casting Core Plugs And Expansion Plugs
- Charge Air Coolers ""INTERCOOLERS"" (CAC)
- Check Valves
- Chemical Engine DECARBONIZATION
- Chokes
- Clutch Pedal Position Switches
- Cold Start Injectors
- Combustion Chamber Cleaning
- Connectors
- Coolant Recovery Tanks
- Coolant
- Cooling Fan Motor Modules
- Cooling Fan Motor Relays And Modules
- Cooling Fan Motor Resistors
- Cooling Fan Motor Sensors And Switches
- Cooling Fan Motor Switches
- Cooling Fan Motors
- Crankshaft Position Sensors
- Cylinder Deactivation Solenoid
- Cylinder Head Assemblies
- DECEL Valves
- Deflectors
- Dip Stick Tubes
- Dip Sticks And Tubes
- Distributor Advances And Retarders (Mechanical And Vacuum)
- Distributor Boots And Shields
- Distributor Caps
- Distributor Retarders (Mechanical And Vacuum)
- Distributor Rotors
- Distributor Shields
- Distributors
- Early Fuel Evaporation Valves (Heat Riser Assemblies)
- EGR Coolers
- EGR Exhaust Manifold Passages
- EGR Intake And Exhaust Manifold Passages
- EGR Plates And Coolers
- Electronic Spark Control Modules
- Electronic Transmission Control Devices
- Electronic Transmission Feedback Devices
- Engine Coolant Temperature Sensors
- Engine Cooling Systems
- Engine Covers (Oil Pan, Valve Cover, Timing Cover)
- Engine DECARBONIZATION
- Engine Oil Canisters
- Engine Oil Coolers (External)
- Engine Oil Drain Plugs And Gaskets
- Engine Oil Filters And Canisters
- Engine Oil Gaskets
- Engine Oil Pressure Gauges (Mechanical)
- Engine Oil
- Evaporative Emissions (EVAP) Canister Filters
- Evaporative Emissions (EVAP) Canister Purge Devices
- Evaporative Emissions (EVAP) Canisters
- Evaporative Emissions (EVAP) Feedback Devices
- Exhaust Gas RECIRCULATION Devices
- Exhaust Gas RECIRCULATION Feedback Devices
- Expansion Plugs
- Fan Control Sensor
- Fuel Accumulators And Dampers
- Fuel And Cold Start Injectors
- Fuel Caps
- Fuel Dampers
- Fuel Delivery Check Valves
- Fuel Distributors (BOSCH Cis)
- Fuel Filler Necks And RESTRICTORS
- Fuel Filters
- Fuel Injector Cleaning
- Fuel Injectors
- Fuel Level Senders
- Fuel Pressure Regulators
- Fuel Pumps (In-Tank, External, Electrical Or Mechanical)
- Fuel Rails
- Fuel RESTRICTORS
- Fuel System Cleaning Service
- Fuel Tanks
- Fuel
- Gaskets
- Grommets (Valve Cover)
- Harmonic Dampers
- Heater Control Valves
- Heater Cores
- Hose Clamps
- Hose Connectors
- Hose Couplers
- Hoses And Tube Couplers, Connectors And Clamps
- Hoses And Tubes (Fuel Lines, Radiator, Vacuum, By-Pass, Heater, Recovery Tank And Oil Coolers)
- Housings
- Idle Air Controls
- Idle Speed Control Actuators
- Ignition Boots
- Ignition Coil Towers
- Ignition Coils
- Ignition Control Modules (ICM)
- Ignition Switches
- Ignition Terminals
- Ignition Wires (Secondary)
- Inertia Fuel Shut-Off Switches
- Intake Air Temperature Sensors
- Intake Cleaning
- Intake Manifolds
- In-Tank Fuel Strainers
- INTERCOOLERS
- Knock Sensors
- Liquid Vapor Separators
- Long Block Assemblies
- Manifold Absolute Pressure (Map) Sensors
- Mass Air Flow (MAF) Sensors
- Metal Air Manifolds And Pipes
- Metal Air Pipes
- Mix Control Solenoids
- Motor Mounts
- O2 Sensors
- Oil Pans
- Oil Pressure Sending Units
- Oil Pump Pick-Up Screens
- Oil Pumps
- O-Rings, Gaskets, Seals And Spring Locks
- Park Neutral Position Switches
- PCV Breather Elements
- PCV Orifices
- PCV Valves
- Pick-Up Assemblies (Includes Magnetic, Hall Effect And Optical)
- Power Steering Pressure Sensors
- Powertrain Control Modules (Pcm) And Prom
- Powertrain Control Prom
- Pressurized Expansion Tank Caps
- Radiator / Cooling Fan Blades
- Radiator / Cooling Fan Clutches
- Radiator Caps And Pressurized Expansion Tank Caps
- Radiators
- Roll Over Valves
- Sealing Compounds
- Seals
- Secondary Air Injection System Management Devices
- Sensors
- Short Block Assemblies
- Shrouds, Baffles And Deflectors
- Spark Plugs
- Spring Locks
- Super Chargers
- Switches
- Thermal Vacuum Valves
- Thermostatic Air Door Assemblies
- Thermostats And Housings
- Throttle Bodies
- Throttle Body Cleaning
- Throttle Cables
- Throttle Linkages And Cables
- Throttle Position Sensors
- Throttle Position Switches
- Timing Belt Sprockets
- Timing Belts
- Timing Covers
- Torque Struts
- Transmission Range Switches
- Tube Clamps
- Tube Connectors
- Tube Couplers
- Tubes
- Turbo Chargers
- Vacuum Connections
- Vacuum Hoses, Tubes And Connections (Non-Metallic)
- Vacuum Regulator Solenoids
- Vacuum Tubes
- Valve Covers
- Vehicle Speed Senors
- Volume Air Flow Sensors
- Waste Gate And Boost Control Mechanisms
- Waste Gate Control Solenoids
- Water Pumps (Electric)
- Water Pumps (Non-Electric)
- Wiring Harnesses And Connectors
- Reason Code Explanation
- Automotive Terminology & Definitions
- Parasitic Load Explanation & Test Procedures - General Information
- State Emission Standards - Diesel
- State Emission Standards - Gas
- ALASKA
- ARIZONA
- CALIFORNIA
- Colorado
- CONNECTICUT
- DELAWARE
- District Of COLUMBIA
- GEORGIA
- IDAHO
- ILLINOIS
- INDIANA
- KENTUCKY
- MARYLAND
- MASSACHUSETTS
- MISSOURI
- NEVADA
- New Jersey
- New MEXICO
- New YORK
- North CAROLINA
- OHIO
- OREGON
- PENNSYLVANIA
- RHODE Island
- TENNESSEE
- TEXAS
- UTAH
- VIRGINIA
- WASHINGTON
- WISCONSIN
- U. S. EPA ASM2525 & ASM5015 Start-Up Emission Standards
- U. S. EPA Revised Final ASM Emission Standards (ASM5015 & ASM2525)
- U.S. EPA Im240 Emission Standards
- Waveforms - Injector Pattern Tutorial - General Information
- * Please Read This First *
- Purpose Of This Article
- Is A Lab Scope Necessary?
- The Two Types Of Injector Drivers
- The Two Ways Injector Circuits Are Wired
- Interpreting Injector Waveforms
- Current Waveform Samples
- Notes
- Example #1 - Voltage Controlled Driver
- Example #2 - Voltage Controlled Driver
- Example #3 - Voltage Controlled Driver
- Example #4 - Current Controlled Driver
- Example #5 - Current Controlled Driver
- Example #6 - Current Controlled Driver
- Example #7 - Current Controlled Driver
- Example #8 - Current Controlled Driver
- Voltage Waveform Samples
- Notes
- Example #1 - Voltage Controlled Driver
- Example #2 - Voltage Controlled Driver
- Example #3 - Voltage Controlled Driver
- Example #4 - Current Controlled Driver
- Example #5 - Current Controlled Driver
- Example #6 - Current Controlled Driver
- Example #7 - Current Controlled Driver
- Example #8 - Current Controlled Driver
- Map - Exhaust Systems
- Exhaust Systems
- Notes
- Map Standards Of Service
- The Map Process - Overview
- The Map Process - Overview Of Service Requirements And Suggestions
- Catalytic Converters
- Exhaust And Tail Pipes
- Exhaust Connections
- Hangers
- Heat Risers (Mechanical EFE Devices)
- Heat Shields
- Manifolds (Cast And Tube Type)
- Mechanical EFE Devices
- Muffler Valve
- Mufflers And Resonators
- Reason Code Explanation
- Exhaust Systems
- Heating, Ventilation & A/C (HVAC)
- Map - Heating, Ventilation, & Air Conditioning
- Heating, Ventilation & Air Conditioning Systems
- Notes
- Map Standards Of Service
- The Map Process - Overview
- The Map Process - Overview Of Service Requirements And Suggestions
- Accumulators
- Actuators (Electrical)
- Actuators (Vacuum)
- Air Conditioning Fittings
- Air Conditioning Hoses
- Air Conditioning Metal Lines
- Air Control Doors
- Air Dams (External)
- Air Distribution System
- Belts
- Blend Doors
- Blower Fans (Blower Wheel Or Squirrel Cage)
- Blower Motors
- Blower Resistors
- Blower Switches
- Cabin Air Filters
- Circuit Breakers
- Compressor Clutch Assemblies
- Compressors
- Condenser Air Seals
- Condenser Fan Motors
- Condensers
- Connectors
- Control Cables
- Control Heads (Function Selectors)
- Control Linkages
- Control Modules
- Coolant
- Cooling Fan Blades
- Cooling Fan Clutches
- Cooling Fan Motors
- Evaporator Drain Tubes
- Evaporator Filters
- Evaporator Pressure Regulators (EPRS)
- Evaporators
- Expansion Valves
- Function Selectors
- Fuses, Fusible Links And Circuit Breakers
- Fusible Links
- Gaskets
- Heater Cases
- Heater Control Valves
- Heater Cores
- Heater Hoses
- High Pressure Relief Valves (HPRV)
- Idlers
- In-Line Filters
- Metal Fittings
- Metal Lines
- Mix And Air Control Doors (Blend Doors)
- ORIFACE Tubes
- O-Rings
- Pilot-Operated Absolutes (POAS)
- Plenums
- Pressure Control Valves
- Pressure Sensors
- Pulleys
- Radiators
- Receiver-DRIERS
- Refrigerant Oil
- Refrigerant
- Relays
- Seals
- Service Ports
- Spring Lock Couplings
- Suction Throttling Valves (STVS)
- Switches (Electrical)
- TENSIONERS
- Thermistors And Pressure Sensors
- Thermostats And Housings
- Vacuum Hoses And Tubes
- Vacuum Reservoirs
- Vacuum Tubes
- Valves In Receiver (VIRS)
- Water Pumps (Electric Auxiliary)
- Wiring Harnesses And Connectors
- Heating, Ventilation & Air Conditioning System CHECKSHEET
- Reason Code Explanation
- Automotive Terminology & Definitions
- Heating, Ventilation & Air Conditioning Systems
- Map - Heating, Ventilation, & Air Conditioning
- Identification
- Metric Conversions
- OEM General Information
- How To Use The Engine Performance Section
- Restraints
- Air Bag Deactivation Procedures
- Special Care During Mechanical Repairs
- ACURA
- AUDI
- BMW
- CHRYSLER & MITSUBISHI
- Ford Motor Co.
- Geo
- HONDA
- HYUNDAI
- INFINITI
- ISUZU
- Jaguar
- KIA
- Land Rover
- LEXUS
- MERCEDES-BENZ
- MITSUBISHI
- NISSAN
- PORSCHE
- SAAB
- SUBARU
- SUZUKI
- TOYOTA
- VOLKSWAGEN
- VOLVO
- Air Bag Deactivation Procedures
- Specifications Index
- Steering
- Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
- Steering & Suspension Systems
- Wheel And Tire
- Steering & Suspension CHECKSHEET
- Wheels & Tires CHECKSHEET
- Steering And Suspension, Wheel Alignment, Wheels And Tires
- Notes
- Active Handling
- Active Suspension Control Modules
- Active Variable Ratio Steering
- Active Yaw Control
- Adaptive Cruise Control
- Advance TRAC
- Air Bags
- Air Ride Control Modules
- Air Ride Suspension Torsion Springs (Counter Balancing)
- Air Ride Suspension
- Air Ride Tubes
- Air Shocks And Air Struts
- Air Spring Valves
- Air Springs
- Air Suspension Control Valves
- Air Suspension DRIERS
- Axle Acceleration Sensor
- Ball Joints
- Body Acceleration Sensor
- Bushings
- Center Links
- Compressors
- Continuous Damping Control
- Control Arm Shafts
- Control Arms
- Control Modules
- Distance Regulation Control Module
- Distance Regulation Sensor
- Drag Links
- Dynamic Stability Control
- Dynamic Stability Traction Control
- Electronic Ride Control Shocks And Struts
- Electronic Stability Control
- Electronic Suspension System
- Flex Couplers
- Gaskets
- Height Sensors
- Hydraulic Hoses
- Hydraulic Power Steering Pumps
- Hydraulic Suspension Hoses
- Hydraulic Suspension Pumps
- Idler Arms
- Intermediate Shaft U-Joints
- King Pins
- Modules
- Pitman Arms
- Power Steering Belts
- Power Steering Coolers
- Power Steering Fluid
- Power Steering Hoses
- Power Steering Lines (Steel)
- Power Steering Pumps - Electric
- Power Steering Pumps
- Radar Sensor
- Radius Arms
- Relay Rods
- Relays
- Sensors
- Shock Absorbers, Strut Cartridges And Strut Assemblies
- Spindles
- Springs, Coil, Leaf And Torsion Bars
- STABILITRAC
- Stability Management System
- Steering Angle Sensor
- Steering Arms
- Steering Couplers
- Steering Dampers
- Steering Gears (Except Rack And Pinion)
- Steering Gears, Rack And Pinion
- Steering Knuckles
- Strike Out Bumpers
- Strut Bearing Plate Assemblies
- Strut Rods
- Suspension Pumps (Hydraulic)
- Sway Bar Links
- Sway Bar Mounting Bushings
- Sway Bars
- Switches
- Tie Rod Ends (Inner And Outer)
- Tire Pressure Monitoring System
- Tire Pressure Sensors
- Tires
- Torque Sensor
- Torsion Springs
- Track Bar Bushings
- Track Bars
- Trailing Arm Bushings
- Trailing Arms
- Valve Stems
- Vehicle Dynamics Control
- Vehicle Speed Sensor
- Vehicle Stability Assist
- Vehicle Stability/Skid Control
- Warning Lamps
- Wheel Alignment
- Wheel Attachment Hardware
- Wheel Bearings, Races And Seals
- Wheels (Rims)
- Wiring Harnesses And Connectors
- Reason Code Explanation
- Automotive Terminology & Definitions
- Wheel Alignment Theory & Operation - General Information
- Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
- Traction Control Disable Procedures
- Trouble Shooting - Manual Transmission - General Information
- Heating, Ventilation & A/C (HVAC)
- HVAC Control Systems
- A/C-Heater System - Manual
- Heater System
- HVAC Control Systems
- Steering
- Manual Steering
- Power Steering - 3.9L & 4.2L
- Description
- Operation
- Bleeding
- Lubrication
- Maintenance
- Adjustments
- Troubleshooting
- Performance Testing
- Symptom Tests
- Notes
- Excessive Kickback Through Steering Wheel When Driven On Rough Terrain
- Fluid Leaks From Steering Box Seals
- Insufficient Power Assistance - Castor Return Action Normal
- Steering Heavy - Stiff, Poor Castor Return Action
- Steering Excessively Light/Sensitive, Excessive Free Play At Steering Wheel
- Steering Vibration, Road Wheel Wobble
- Component Tests
- Removal & Installation
- Overhaul
- Steering Specifications
- Torque Specifications
- Special Tools
- Power Steering - 3.9L & 4.2L
- Power Steering - 3.9L & 4.2L
- Description
- Operation
- Bleeding
- Lubrication
- Maintenance
- Adjustments
- Troubleshooting
- Performance Testing
- Symptom Tests
- Notes
- Excessive Kickback Through Steering Wheel When Driven On Rough Terrain
- Fluid Leaks From Steering Box Seals
- Insufficient Power Assistance - Castor Return Action Normal
- Steering Heavy - Stiff, Poor Castor Return Action
- Steering Excessively Light/Sensitive, Excessive Free Play At Steering Wheel
- Steering Vibration, Road Wheel Wobble
- Component Tests
- Removal & Installation
- Overhaul
- Steering Specifications
- Torque Specifications
- Special Tools
- Steering Columns - 3.9L & 4.2L
- Manual Steering
- Suspension
- Transmission
- Clutches
- Manual Trans
- Overhaul - R380 5-Speed
- Application & Labor Times
- Identification
- Lubrication & Adjustments
- Trouble Shooting
- Removal & Installation
- Transmission Disassembly
- Component Disassembly & Reassembly
- Adjustments
- Transmission Reassembly
- Transmission Specifications
- Torque Specifications
- Removal & Installation - M/T
- Servicing - M/T
- Overhaul - R380 5-Speed
- External Pages