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  1. #31
    cutlasssupremeking's Avatar
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    ECM/PCM (computer) not giving code 12. Just blink, long pause, blink, long pause

    I just replaced my ECM in effort to get my car running again along with a myriad of other things. I am concerned about this Check Engine Light sequence I am getting. Its blink, long pause, blink, long pause. And it repeats. The thing is, that I get this sequence all the time, even if I am not checking for Trouble Codes!
    What is going on? Is my ECM dead?


    Here is the link to my previous thread for my car troubles, I don't know that it will help much:
    http://www.w-body.com/forum/index.php?topic=83202.0

  2. #32
    ManicMechanic's Avatar
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    Re: ECM/PCM (computer) not giving code 12. Just blink, long pause, blink, long pause

    Sounds like wrong ECM.
    Jay
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  3. #33
    cutlasssupremeking's Avatar
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    Re: ECM/PCM (computer) not giving code 12. Just blink, long pause, blink, long pause

    You mean that Kragen gave me the wrong part for my car?!

  4. #34
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    Re: ECM/PCM (computer) not giving code 12. Just blink, long pause, blink, long pause

    Entirely possible.
    Jay
    "Eh, ya know somethin' Jimmy...It's one thing to understand how to bolt aftermarket parts to your car...It's another thing entirely (opens exhaust on GN) to understand how they all..work..together!"

    I may not have a W anymore, but my trucks have a lot of w-body parts.
    THE ANSWER TO 1984 IS 1776.

  5. #35
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    Re: ECM/PCM (computer) not giving code 12. Just blink, long pause, blink, long pause

    Yup. I would say its the wrong PCM, or the wrong memcal unit in it.
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  6. #36
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    Re: Codes 22, 33, 35, 44, 45. What does this mean? What do I do?

    Did you check the wiring for the map tps and the iac? Sounds like you got a break somewhere. I believe they all use the same basic circuit. the o2 codes are probably being caused being this. Check for 5v reference at all 3 sensors, your ground, and the signal wires.
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    Re: ECM/PCM (computer) not giving code 12. Just blink, long pause, blink, long pause

    I would check to make sure there is a memcal in that ecm. You may need to remove the memcal from your old ecm and put it in the new one because I think new ecm's don't come with the memcal. If your old memcal is suspect... try a junk yard for the same year/motor/model.

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  8. #38
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    Re: ECM/PCM (computer) not giving code 12. Just blink, long pause, blink, long pause

    if you post the BCC i can tell you what all MEMCALs will work...
    King of Code
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  9. #39
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    Re: ECM/PCM (computer) not giving code 12. Just blink, long pause, blink, long pause

    I merged this thread with your old one since this is just a continuation of the same problem. From now on, do not start a separate topic for the same problem. Posting in your old thread brings it to the top where everyone will see it. By the way, you can edit the first post in a thread to change the title of it to reflect an update/or new issue you want to put emphasis on.

  10. #40
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    Re: ECM/PCM (computer) not giving code 12. Just blink, long pause, blink, long pause

    Oooh, okay. That's a handy trick. Thanks. I won't dual post for the same problem.

  11. #41
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    Re: What do these Trouble Codes mean?! 22, 33, 35, 44, 45.

    The Memcal is fine. I think I made the mistake of leaving the battery connected when I plugged in the new ECM/PCM. That probably fried it. I got another ECM and unplugged the battery this time and the car started right up. I think it was the last of a number of needed fixes.
    But, my car liiiiiives! Thanks guys for all your help and suggestions.

    Oh, and I think the 'blink, long pause, blink, long pause' means that the computer is not working, get a dang new one. I don't think 'blink, long pause, blink, long pause' isn't a Trouble Code. I think its a 'you messed up big genius!' code.

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