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No. 5 - Engine Stalls-After Start/At Idle: Notes

NO. 5 ENGINE STALLS-AFTER START/AT IDLE DESCRIPTION AND POSSIBLE CAUSE

5 ENGINE STALLS-AFTER START/AT IDLE
DESCRIPTION
  • Engine stops unexpectedly at idle, after start, or both.
POSSIBLE CAUSE
  • Engine overheating
  • PCM DTC is stored
  • Erratic signal to PCM
  • APP sensor or related circuit malfunction
  • ECT sensor No. 1 or related circuit malfunction
  • MAF sensor or related circuit malfunction
  • MAP sensor or related circuit malfunction
  • A/F sensor or related circuit malfunction
  • HO2S or related circuit malfunction
  • Improper air/fuel mixture ratio control
  • Improper operation of A/C system
  • Improper operation of drive-by-wire control system
  • Purge solenoid valve malfunction
  • Open circuit in MAF sensor ground circuit
  • Intermittent open circuit in PCM ground circuit
  • Poor fuel quality
  • Air leakage from intake-air system
  • Vacuum leakage
  • Intake-air system restriction
  • Electrical connector disconnected
  • No battery power supply to PCM or poor ground
  • Fuel leakage
  • No signal from CKP sensor
  • Loose installation
  • Damaged trigger wheel (crankshaft pulley)
  • Open or short circuit in related wiring harness
  • Erratic signal from CMP sensor
  • Loose installation
  • Damaged trigger wheel (intake camshaft)
  • Damaged trigger wheel (exhaust camshaft)
  • Open or short circuit in related wiring harness
  • Inadequate fuel pressure (high or low pressure side)
  • Open or short circuit in the fuel pump (low-side) body or related wiring harness
  • Fuel pressure sensor or related circuit malfunction
  • Fuel pump (low-side) body mechanical malfunction
  • High pressure fuel pump malfunction
  • Spill valve control solenoid valve control circuit malfunction (damage to driver in PCM caused by short circuit to ground system)
  • Spill valve control solenoid valve malfunction (built-into high pressure fuel pump)
  • Relief valve (built-into high pressure fuel pump) malfunction
  • Fuel line restriction
  • Fuel filter clogged (built-into fuel pump unit)
  • Fuel pump unit malfunction
  • Fuel injector malfunction
  • Incorrect fuel injection timing
  • Improper operation of electric variable valve timing control system
  • Electric variable valve timing driver malfunction
  • Electric variable valve timing motor malfunction
  • Electric variable valve timing actuator malfunction
  • Improper operation of hydraulic variable valve timing control system
  • Ignition system malfunction
  • Ignition coil malfunction
  • Low engine compression
  • Improper intake valve timing
  • Improper exhaust valve timing
  • Exhaust system and/or TWC restricted or clogged
  • PCV valve malfunction
  • Injector driver (built-into PCM) malfunction
POSSIBLE CAUSE
WARNING:
  • The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
  • Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
  • Highly pressurized fuel may spray out if the fuel line is cut. Due to the following dangers occurring with a fuel spray, always complete the "Fuel Line Safety Procedure" to prevent the fuel from spraying. (See BEFORE SERVICE PRECAUTION .)
  • Fuel may cause irritation if it comes in contact with skin and eyes.
  • If fuel ignites and causes a fire, it may lead to serious injury or death, and damage to property and facilities.
  • Fuel is highly flammable and dangerous. Fuel line spills and leakage can cause serious injury or death, and damage to equipment. Always refer to the "Quick Release Connector Removal/Installation (fuel system)" before performing the fuel hose installation, and execute the "Fuel Leakage Inspection" after installation. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION .) (See AFTER SERVICE PRECAUTION .)
CAUTION:
  • Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.