Surge – Engine power variation under steady throttle or cruise. Vehicle speed changes up and down with no change in accelerator pedal position.
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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Surge – Engine power variation under steady throttle or cruise. Vehicle speed changes up and down with no change in accelerator pedal position.
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Faulty spark plug (excessive carbon deposits, improper gap, burned electrodes, etc.)
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Variable fuel pressure
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Kinky or damaged fuel lines
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Fuel pump (clogged fuel filter)
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Poor performance of MAP sensor or MAF sensor
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Faulty fuel injector
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Faulty ECM
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Faulty electric throttle body assembly
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Faulty APP sensor
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VVT system out of order
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•VVT actuator: Camshaft and VVT Actuator Inspection:K14C
•Valve timing: Timing Chain and Chain Tensioner Inspection:K14C •OCV oil circuit: Timing Chain Cover Inspection:K14C |