Ok, I'm getting an occasional 1391 code. Warmed up at a red light in gear it will just drop off a little in the RPMs. Runs fine otherwise. Do I need to worry or not? Cam or crank sensor? 2001 4.0 auto.
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2001 XJ
P01391
Ok, I'm getting an occasional 1391 code. Warmed up at a red light in gear it will just drop off a little in the RPMs. Runs fine otherwise. Do I need to worry or not? Cam or crank sensor? 2001 4.0 auto.
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