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Thread: Pcm/ecm

  1. #1
    Land Squid Jeffb_79's Avatar
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    Default Pcm/ecm

    Cliffs notes:
    My transmission sucks right now.
    05 Rubicon with 42RLE auto
    Occasional rough shifting, and doesn't like to down shift into 1st gear when I come to a stop. Usually leads me to starting off from a stop in 2nd gear.



    OK... so I'm down to 2 possibilities for my stupid auto transmission issues....
    The 1st possibility is the solenoid valve assembly.
    This is located inside the trans on top of the channel plate. Looks like it could be a pita to change out, but probably not too bad.
    The 2nd possibility is that the TCM is going bad. From my understanding, the TCM is integrated into the ECM/PCM.

    It looks like the parts are going to be around $150 each. In a perfect world, I'd love to get my hands on an ecm for a couple of weeks to see if that's my actual issue, before i start digging into the transmission.
    What do I need to look for in a replacement ecm? I know some are programmed different for CA or federal smog. Some are set up for immobilizer keys. Some for auto's and some for manuals.
    How can I ensure the new ecm will work in my jeep? Or do I just order an ecm and bring it to the dealer for a flash?

  2. #2
    Got Beer airforce26yrs's Avatar
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    Default

    Good question, and I have no answer. I started to go to wjjeeps.com and then thought about you having a rubi.

    You might want to post this on jeepforum.com. There seem to be some very knowledgeable people there.

    The answer will be interesting, please keep us informed on the procedure.
    Last edited by airforce26yrs; 07-31-2009 at 14:54.
    I'm Mike, make sure you spell it right, because I do not want to get the wrong A$$hole in trouble.

    If you do not have time to do it right the first time, how do you have time do do it over?

    www.jeepforum.com michiganmaveric

  3. #3
    Administrator korisu56's Avatar
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    PM Crazy4Ink. Pretty sure he said he doesn't mess with auto's though.

  4. #4
    Got Beer airforce26yrs's Avatar
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    Here is a reply from a thread I put on Jeepforum.com.

    http://www.jeepforum.com/forum/showthread.php?t=828184
    I'm Mike, make sure you spell it right, because I do not want to get the wrong A$$hole in trouble.

    If you do not have time to do it right the first time, how do you have time do do it over?

    www.jeepforum.com michiganmaveric

  5. #5
    Land Squid Jeffb_79's Avatar
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    Thanks, I just chimed in over there.

  6. #6
    darwinism at its best irish1371's Avatar
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    take it to beep beep aamco they diagnose for free last time i checked. them em ya got to think about it then fix it yourself
    "Some people wonder their whole lives if they will ever make a difference. Marines don't have that problem." Pres. Ronald Reagan
    Army vs Marines = http://www.youtube.com/watch?v=_2M7ckkxQLU

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