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1998 Dodge 4x4 1500 318 with codes P0300, P0302, P0303, and P1391. Would this code make the engine run rough and lose power in my 1998 dodge 318 half-ton pickup?

Vehicle: 1998 Dodge 4x4 1500 318

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P1391 Intermittent loss of (CMP) or CKP

Yes this will cause your vehicle to run rough and loose power, what this code deals with is the Cam position (CMP) sensor and the Crank position sensor (CKP). The most common cause of P1391 is the cam position sensor. If you intermittent loss the CKP you would just stall out. The CMP is more than likely the problem

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