LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Buick
>>
1985
>>
Regal T-Type
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Diesel CEC System - W/Internal EGR (Fwd)
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Diesel CEC System - W/Internal EGR (Fwd)
Expand All (for easy ctrl-f)
Collapse All
Description
Operation
System Overview
Altitude Compensation
Notes
Electrical Altitude Compensation Below 4000 ft. (1220 m)
Electrical Altitude Compensation Above 4000 ft. (1220 m)
Vacuum Altitude Compensation
Diesel Electronic Control Module (ECM)
ECM Input Sensors
Engine Speed
Metering Valve Sensor (MVS)
Manifold Absolute Pressure Sensor (MAP)
Vehicle Speed Sensor (VSS)
Engine Coolant Temperature Sensor (FWD DeVille & Fleetwood Models Only)
ECM Output Engine Control Components
EGR Solenoid
EPR Solenoid & Valve
TCC Solenoid
Diagnostic System
Diagnosis & Testing
Diagnostic Procedure
Component Testing
Altitude Switch
EGR Valve
Altitude VRV & Response Reducer Valve
Altitude Solenoid
EPR Valve
HPCA/Fast Idle Temperature Switch
Dec Diagnostic Check
Engine Light Check
Engine Speed Check
Map Sensor Check
MVS Check
EGR Solenoid Check
EPR Electrical Check
Vacuum Check
EPR Vacuum Check
VSS Check
Transaxle Converter Check
ECM Terminal Identification
Wiring Diagrams