No. 10 Low Idle/Stalls During Deceleration: Notes
WARNING: This page is about a different variant/trim than selected.
NO. 10 LOW IDLE/STALLS DURING DECELERATION (SKYACTIV-G 2.5, VIN M) DESCRIPTION AND POSSIBLE CAUSE
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LOW IDLE/STALLS DURING DECELERATION |
| DESCRIPTION |
- Engine speed decreases when the accelerator pedal is released.
- Stalls during deceleration with the accelerator pedal fully released.
- When the accelerator pedal is fully released, vehicle stalls directly after vehicle stops.
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| POSSIBLE CAUSE |
- PCM DTC is stored
- Erratic signal to PCM
- APP sensor or related circuit malfunction
- Brake switch or related circuit malfunction
- Communication error between TCM and PCM
- ECT sensor 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
- TP sensor or related circuit malfunction
- Generator malfunction (part, system, control malfunction)
- Amount of generator voltage is large
- Improper operation of A/C magnetic clutch
- Improper operation of drive-by-wire control system
- Incorrect fuel injection timing
- Fuel injector malfunction
- Purge solenoid valve malfunction
- Poor fuel quality
- Air leakage from intake-air system
- Intake-air system restriction
- Fuel leakage
- Vacuum leakage
- Engine mount installation loose
- Erratic signal from intake CMP sensor
- Loose installation
- Damaged trigger wheel (intake camshaft and/or exhaust camshaft)
- Open or short circuit in related wiring harness
- Erratic signal from CKP sensor
- Loose installation
- Damaged trigger wheel (crankshaft pulley)
- Open or short circuit in related wiring harness
- Inadequate fuel pressure (high or low pressure side)
- Fuel pressure sensor or related circuit 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 (built-into high pressure fuel pump) malfunction
- Relief valve (built-into high pressure fuel pump) malfunction
- Fuel line restriction
- Fuel filter clogged
- Fuel pump unit malfunction
- ATX malfunction
- Low engine compression
- 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
- 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 vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
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 matter.
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CAUTION:
- Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.