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P1391 Diagnostic Trouble Code Discussion for August 2019

CKP Or CMP Sensor Signal Intermittent


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Trouble Ticket Help Requests for DTC P1391
Help Request Posted
1999 Dodge Ram 3500 8.0L Hesitation, Surge, Cuts out, MIL Lamp on VIN: 3B6MF36W4X
P1391: Cam and crank loss of sync. ... engine reached operating temp and the mil cam on. Once the engine cooled it would start and run fine until it got warm agian. Used a scan tool and determined the crank sensor was failing when it got warm. Replaced the cam and crank sensors with afterm...
August 08, 2019