P1391 Diagnostic Trouble Code Discussion for January 2017
CKP Or CMP Sensor Signal Intermittent
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| Help Request | Posted | |
| 2000 Jeep Wrangler Sport 4.0L Poor Idle Quality, Stall, MIL Lamp on VIN: 1J4FA49SXY P1391: CKP Or CMP Sensor Signal Intermittent. ... p0352 and p1391 codes most of time. Rarely it will start and run smooth.check valve in fuel pump leaks off but has long crank before starting unless you cycle key three times. All parts used are Napa parts. Thanks in advance |
January 06, 2017 | |
| 2002 Dodge Ram 1500 ST 4.7L No Start VIN: 1D7HU18N12 P1391: Cam or crank signal intermittent loss. Unfortunately I can not find a good known scope wave pattern for this particular vehicle for the Cam vs crank signal. This vehicle is equipped with the 3 plug PCM and as far as I understand this is the part that makes a difference in regards to the reluctor sp... |
January 11, 2017 |
