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P1391 Diagnostic Trouble Code Discussion for January 2016

CKP Or CMP Sensor Signal Intermittent


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Trouble Ticket Help Requests for DTC P1391
Help Request Posted
2003 Jeep Wrangler X 4.0L Poor Idle Quality, Hesitation, Cuts out, Misfire VIN: 1J4FA39S03
P1391: CKP Or CMP Sensor Signal Intermittent. ... knocking noise. I replaced the engine with a jasper and replaced the radiator. The check engine light came on when I was done and had p0351, p0352, p0353. I replaced the ignition coil, cam synchronizer and crank sensor. Now it has a slight misfire at idle ...
January 21, 2016