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:M16A and Engine Basic Inspection:M16A.
| 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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Faulty fuel pump (clogged fuel filter)
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Poor performance of MAP 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: VVT Actuator, Camshaft, Tappet and Shim Inspection:M16A
•Valve timing: Timing Chain and Chain Tensioner Inspection:M16A •OCV oil circuit: Timing Chain Cover Inspection:M16A |