No. 11 Engine Stalls/Quits, Engine Runs Rough, Misses, Buck/Jerk, Hesitation/Stumble, Surges: Notes
WARNING: This page is about a different variant/trim than selected.
| 11 |
ENGINE STALLS/QUITS-ACCELERATION/CRUISE
ENGINE RUNS ROUGH-ACCELERATION/CRUISE
MISSES-ACCELERATION/CRUISE
BUCK/JERK-ACCELERATION/CRUISE/DECELERATION
HESITATION/STUMBLE-ACCELERATION
SURGES-ACCELERATION/CRUISE |
| DESCRIPTION |
- Engine stops unexpectedly at the beginning of acceleration or during acceleration.
- Engine stops unexpectedly while cruising.
- Engine speed fluctuates during acceleration or cruising.
- Engine misses during acceleration or cruising.
- Vehicle bucks/jerks during acceleration, cruising, or deceleration.
- Momentary pause at beginning of acceleration or during acceleration.
- Momentary minor irregularity in engine output.
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| POSSIBLE CAUSE |
- Vacuum leakage
- Air cleaner restriction
- Air leakage from intake-air system parts
- Intake air system restriction
- Poor fuel quality
- Disconnected electrical system connector
- Loose attaching bolts or worn engine mounts
- PCM DTC is stored.
- Engine overheating
- Throttle body restriction or clogged
- Erratic signal to PCM
- APP sensor or related circuit malfunction
- TP sensor or related circuit malfunction
- CKP sensor or related circuit malfunction
- MAF sensor or related circuit malfunction
- TP sensor or related circuit malfunction
- Battery or related circuit malfunction
- VSS or related circuit malfunction
- Erratic signal from CKP sensor
- Fuel leakage from fuel injector
- Fuel injector clogging
- Improper operation of drive-by-wire control system
- Restriction in exhaust system
- Inadequate fuel pressure
- Intermittent open or short circuit in fuel pump circuit
- Fuel pump mechanical malfunction
- Fuel line restriction or clogging
- Pressure regulator malfunction (built-in fuel pump unit)
- Fuel leakage from fuel system
- Improper A/C system operation
- Improper operation of cruise control system
- Improper air/fuel mixture ratio control operation
- A/F sensor or related circuit malfunction
- PCV valve malfunction
- Check valve (two-way) malfunction integrated with fuel tank
- Purge solenoid valve malfunction
- Fuel flow into evaporative purge hose
- Erratic signal or no signal from CMP sensor
- Low engine compression
- Improper valve timing due to jumping out timing chain
- ATX malfunction
WARNING:
- The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before servicing the fuel system:
- Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
- Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this manual. (See BEFORE SERVICE PRECAUTION
.) (See AFTER SERVICE PRECAUTION
.)
CAUTION:
- Disconnecting/connecting quick release connector without cleaning it may cause damage to fuel pipe and quick release connector. Always clean quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
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