2001 Jeep Grand Cherokee Logo
Posted on Jul 07, 2010
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Code 1391 Replaced crankshaft sesor and still getting code1391 could it just be loose?

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  • Anonymous Jul 07, 2010

    could be a slightly corroded pin terminal at either end of the harness, a harness that is worn through and intermittently shorting on something or in extreme cases (I've only seen one or two) the thrust bearing on the crankshaft is worn and the sensor is not always aligned with the flywheel all of the time. That code also relates to the cam sensor so make sure that is in good condition as well.

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  • Posted on Jul 08, 2010
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This code states there is an intermittant loose of the Crankshaft sensor OR the camshaft sensor. Check the connections on the camshaft sensor and be sure they are clean and tight. Otherwise, you may have a bad connection internally or you could have oil inside due to it is mounted in the oil pump assembly (leftside, middle of engine) and is easy to get too.

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