P0351 jeep cherokee




P0351 jeep cherokee

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  • Jeep Grand Cherokee L straight 6 were given the codes P, P and P! I change the ignition coil, Crank sensor, cramshaft.

    Definition of error code P - Ignition Coil A Primary/Secondary Circuit Malfunction. I have had a problem with my Jeep Grand Cherokee since I have.

    I was throwing a P code with a code This is an aggravating fault to be sure. I am an aircraft electrician by trade so and thanks to the.

    P0351 jeep cherokee

    P0351 jeep cherokee

    Try making your scope settings for your channel 2 match my channel 1 settings crank signal. Find the short and repair it. The codes and their respective definitions are below. DEF Injector protection plate. Zip ties worked for about a week and then I had a hiccup followed two days later by a full blown stall.

    P0351 jeep cherokee

    P0351 jeep cherokee

    P0351 jeep cherokee

    P0351 jeep cherokee

    P0351 jeep cherokee

    Jeep Grand Cherokee L P, P, and P - COMESEEORLANDO.INFO

    Dana 30, Aussie Locker Rear Axle: Sweet roof rack with lots of lights: After struggling with a P code for weeks I thought I'd post what I learned since I've seen no comprehensive method for troubleshooting this issue. Just to setup my situation, I had just completed a 4.

    It started and ran, but would continually throw the P code, sometimes accompanied by the p, p, p codes. It would shut down randomly and run rough sometimes. It even threw a transmission code once just to keep things interesting. A majority of the posts recommended replacing the crank and cam sensors, which I did, and a few recommended phasing the cam sensor housing using the toothpick method, which I did.

    P0351 jeep cherokee

    I had actually replaced the entire cam sensor unit during the rebuild and it used a cap it came with instead of the toothpick, but same deal. Still nothing after trying new sensors and checking the phasing.

    I read several great posts, one of which referenced this article. Besides of being an awesome article the author is THE MAN , he mentions along with one or two other posts using the dealer scan tool to set the phasing. Running out of options, I drove my jeep down to the dealer and talked with the mechanic who said when they get this signature they just replace both sensors.

    P0351 jeep cherokee

    I said I'd really like him to do the phasing procedure takes 5 minutes and I watched as he did it. If anything, it was worse after that. They didn't charge me for the assistance though, which I really appreciated. Now totally fed up, I went back to the article I mentioned earlier and read it again.

    I realized I really needed to dig into the problem and ordered an inexpensive scope here. That is key, 2 inputs. The test I describe next I truly believe anyone can do. All you need to do is find the inputs to the PCM for the crank and cam sensor, then back probe them using a pin, nail, or other method.

    Once you have both signals, you get to watch them and how they interact which will actually tell you what the problem is instead of just throwing parts at it. Here is the setup: Note I just used a couple of alligator clips to ensure everything was grounded properly.

    P0351 jeep cherokee

    I found attaching everything at the PCM easiest, but you could grab the signals from closer to the crank and cam sensors. After getting it setup and adjusting the scope software, I could see the crank signal the blue signal with fast groups of 4 and the cam signal the long yellow signal that captures 3 groups of crank signals. They all looked great. Every set of 3 crank signals is one revolution.

    If you were to look at the flex plate you'd see 3 sets of 4 holes in the ring. If you had a failing crank or cam sensor, you'd see abnormal groupings or drop outs of the signal. It needs to be between two sets of 4. However, check out the orientation of my cam sensor, picture perfect.

    2002 jeep grand Cherokee 4.0 p0351



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