1A
Surges (Engine power variation under steady throttle or cruise. Feels like the vehicle speeds up and down with no change in the accelerator pedal.)
Perform troubleshooting referring to the followings when ECM has detected no DTC and no abnormality has been found in Visual Inspection:M13A without VVT and Engine Basic Inspection:M13A without VVT .
Condition Possible Cause Action
Surges (Engine power variation under steady throttle or cruise. Feels like the vehicle speeds up and down with no change in the accelerator pedal.)
Faulty ignition coil or high-tension cord
Variable fuel pressure
Faulty MAP sensor
Faulty injector
Faulty ECM
Malfunctioning EGR valve (if equipped)