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P1391 Diagnostic Trouble Code Discussion for October 2016

CKP Or CMP Sensor Signal Intermittent


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Trouble Ticket Help Requests for DTC P1391
Help Request Posted
1998 Jeep Wrangler Sahara 4.0L Misfire, MIL Lamp on VIN: 1J4FY49S6W
P1391: CKP Or CMP Sensor Signal Intermittent. Any Jeep techs out there, I have one that has me hung up. I need help. This Jeep is used primarily has a run around vehicle on a large hay production property, so it sees very little highway time (hence the low mileage). Customer brought this one to me for new...
October 08, 2016
2004 Jeep Grand Cherokee Limited 4.0L Hesitation, Cuts out, Stall, MIL Lamp on, Harsh Buck VIN: 1J8GW58S84
P1391: CKP Or CMP Sensor Signal Intermittent. Jeep came in for losing power when driving down the highway. Check engine light is not on. Performed testing and found no codes current or in history. Test drove on highway and Jeep has a violent buck and will not accelerate for about 2-4 seconds. Other times ...
October 19, 2016
2004 Jeep Grand Cherokee Limited 4.0L Hesitation, Cuts out, Stall, MIL Lamp on, Harsh Buck VIN: 1J8GW58S84
P1391: CKP Or CMP Sensor Signal Intermittent. Jeep came in for losing power when driving down the highway. Check engine light is not on. Performed testing and found no codes current or in history. Test drove on highway and Jeep has a violent buck and will not accelerate for about 2-4 seconds. Other times ...
October 27, 2016