Engine hesitates – Momentary lack of response as accelerator is depressed. Can occur at all vehicle speeds. Usually severest when moving out from a stop at stop signal etc.
Precautions: General safety (00)
Perform troubleshooting referring to the following points when ECM has detected no DTC and no abnormality has been found in Visual Inspection:K14C and Engine Basic Inspection:K14C.
| Condition | Possible Cause | Action |
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Engine hesitates – Momentary lack of response as accelerator is depressed. Can occur at all vehicle speeds. Usually severest when moving out from a stop at stop signal etc.
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Faulty spark plug or plug gap out of adjustment
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Fuel pressure out of specification
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Poor performance of ECT sensor, MAP sensor or MAF sensor
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Faulty electric throttle body assembly
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Faulty APP sensor
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Faulty fuel injector
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Faulty ECM
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Engine overheating
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Condition “Engine overheating”
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Low compression
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Malfunctioning air bypass valve
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•Air bypass valve: Turbocharger On-Vehicle Inspection:K14C
•ABV-VSV: ABV-VSV On-Vehicle Inspection:K14C |
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Malfunctioning waste gate valve
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•Waste gate valve: Waste Gate Valve On-Vehicle Inspection:K14C
•WGV-VSV: WGV-VSV On-Vehicle Inspection:K14C |
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Faulty boost pressure sensor
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