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P1391 Diagnostic Trouble Code Discussion for December 2011

CKP Or CMP Sensor Signal Intermittent

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Trouble Ticket Help Requests for DTC P1391
Help Request Posted
1998 Mitsubishi Eclipse GS 2.0L bucking/jerking VIN: 4A3AK44Y8W
P1391: Intermittent Loss of CKP or CMP Sensor Signal. We thought this would be a slam dunk. replaced coil, spark plugs, rear o2 sensor and cleared codes and none came back and it ran flawless until it was fully warmed up then off and on under very light or hard accel it would buck and jerk until you let off gas. ...
December 29, 2011