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P1391 Diagnostic Trouble Code Discussion for November 2012

CKP Or CMP Sensor Signal Intermittent

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Trouble Ticket Help Requests for DTC P1391
Help Request Posted
2000 Jeep Grand Cherokee Limited 4.7L Surge, Cuts out, MIL Lamp on VIN: 1J4GW58N1Y
P1391: CKP Or CMP Sensor Signal Intermittent. ... light complaint and runs rough. The code is a p1391(int. loss of cam or crank sig). The customer had already tried installing a cam sensor and it didnt fix the problem. We have tried both a cam and crank sensor in it with no solution. The waveforms look go...
November 28, 2012