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P1391 Diagnostic Trouble Code Discussion for June 2014

CKP Or CMP Sensor Signal Intermittent

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Trouble Ticket Help Requests for DTC P1391
Help Request Posted
1998 Jeep Cherokee Classic 4.0L No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1J4FJ68S4W
P1391: CKP Or CMP Sensor Signal Intermittent. ... 2 used computers and a new distributor and 2 crank sensors, however vehicle still has a missfire, hesitation. Code p1391 (intermittent loss of cam or crank signal). Wiring harness apears to be good and have performed wiggle test with no change. Cam and cra...
June 12, 2014
1997 Jeep Wrangler Sport 4.0L MIL Lamp on VIN: 1J4FY19S2V
P1391: CKP Or CMP Sensor Signal Intermittent. ... to look at this for an employees' friend. Another shop replaced the ckp sensor with an OE part,for a No Start condition. It fixed the no start but the CEL was then on with fault code P1391. Code description is "intermittant loss of cam or crank positi...
June 17, 2014