No. 5 Engine Stalls-After Start/At Idle: Notes
NO. 5 ENGINE STALLS-AFTER START/AT IDLE (SKYACTIV-G 2.5T) DESCRIPTION AND POSSIBLE CAUSE
| 5 |
ENGINE STALLS-AFTER START/AT IDLE |
| DESCRIPTION |
- Engine stops unexpectedly at idle, after start, or both.
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| 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
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 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.
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.
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