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P1391 Diagnostic Trouble Code Discussion for March 2021

CKP Or CMP Sensor Signal Intermittent


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Trouble Ticket Help Requests for DTC P1391
Help Request Posted
1996 Jeep Grand Cherokee Laredo 4.0L Poor Idle Quality, Stall VIN: 1J4FX58S9T
P1391: CKP Or CMP Sensor Signal Intermittent. ... freeway and then set the P1391 code. Both Cam and Crank sensors were replaced with Jeep dealer parts. When we started it, it would die if we gave it any throttle at all. The engine would stop with an audible clank noise. Since the timing chain was maki...
March 08, 2021