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P1391 Diagnostic Trouble Code Discussion for November 2004

CKP Or CMP Sensor Signal Intermittent

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Trouble Ticket Help Requests for DTC P1391
Help Request Posted
1999 Jeep Grand Cherokee Laredo 4.7L MIL Lamp on VIN: 1J4GW58N1X
P1391: CKP Or CMP Sensor Signal Intermittent. ... help.I work at a ford dealer and one of our good customers brought us this jeep to fix. I have very little chrysler experience. check engine light on , has stored these codes, p0340 loss of cam sensor signal,p1391 intermittent los of cmp or ckp,and p0505 i...
November 09, 2004
1996 Jeep Grand Cherokee Laredo 4.0L No Start, Stall, MIL Lamp on VIN: 1J4EX58SXT
P1391: CKP Or CMP Sensor Signal Intermittent. ... will crank want start, had no spark no injector pulse, had code p0320 no crank reff signal at pcm, scaner reads 0 rpms when crank the engine, check crank sensor circuit had 5 volts good ground signal wire had flat line,so we put crank sensor know the engin...
November 10, 2004
1999 Jeep Grand Cherokee Limited 4.7L Poor Idle Quality, MIL Lamp on VIN: 1J4GW68N1X
P1391: CKP Or CMP Sensor Signal Intermittent. hello group i have this 99 jeep with reoccuring dtc p1399,already replaced ckp sensor.every time i scope cam/crank signals with my dso signals appear in sync.what am i missing? the engine does appear to have slight stumble at idle but i don't know if that is ...
November 18, 2004