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Old 07-06-2009, 11:02 PM   #1
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Camshaft PS error and ingnition errors

I have a 2000 4.0L Wrangler that is throwing a camshaft position code error and now ignition coil errors. The codes are P0340, PO353,PO352,PO351, and P1391. i have replaced the camshaft position sensor about two weeks ago and the Crankshaft Position Sensor today. Yet i still have a problem. The Ignition coil codes are new. I have had consistent problems with the Camshaft sensor however. Im on my like forth one. When i run the jeep very long it starts misfiring and cutting out like its only firing on a couple cylinders. Would the Cam. PS or the Crank PS cause the ignition coil to fail? Any other ideas? help greatly appreciated.

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Old 07-06-2009, 11:10 PM   #2
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Without a little more detail it is hard to say but with that many codes popping up I would be looking into the ECM/PCM itself for the next go around since the CPS and CSS are both new.

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Old 07-06-2009, 11:16 PM   #3
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There is a camshaft position timing procedure the dealer has since it is possible to get out of sync with the camshaft. I'd probably consider that my next step. I just learned about this particular problem last year where the camshaft position sensor gets out of time and causes problems like this.
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Old 07-06-2009, 11:40 PM   #4
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Originally Posted by Jerry Bransford View Post
There is a camshaft position timing procedure the dealer has since it is possible to get out of sync with the camshaft. I'd probably consider that my next step. I just learned about this particular problem last year where the camshaft position sensor gets out of time and causes problems like this.
What does the procedure involve?Rebuilding the distributor or like flashing the computer or what.
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Old 07-06-2009, 11:46 PM   #5
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It involves a mechanical procedure, nothing gets replaced. I think JeepDoc knows more about the actual procedure but should be pretty well known at the dealership.
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Old 07-07-2009, 08:30 PM   #6
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I would also pull the distributor and check the gear and make sure it looks good and not worn, I have seen a couple distributor drive gears worn causing those types of dtc's.
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Old 08-29-2009, 12:24 AM   #7
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i got the error code P0340 after i trying to start the Jeep two times. The third start i let the starter go a little longer and the engine started. Then the check engine light came on. I used the engine code reader to find the trouble code description. I reset the code and the engine will start ok. It seems like the failed start on the frist and second time caused the cam to get out of sync? The Jeep always seem to take a few more spins of the starter to know that the first start will be the one to get the engine running. Were talking just a few more seconds compared to other vehicles I have owned. Not a big noticeable problem, but the ability to start the engine now and when it was new i would say has changed. As I bought this Jeep used and not the orginal owner. Maybe the fuel pressure regulator has a role in this as well? New spark plugs were installed and would not be the problem.

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