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  • Ecm / Pcm

    1993 Firebird 3.4L

    Is there a difference between a PCM/ECM for a 3.4 A4 and a 3.4 5 speed manual?

    I am looking to buy a used one off of ebay but it came from a 5 speed and I have an A4.

  • #2
    Re: Ecm / Pcm

    the manual pcm files I have looked at have never had auto trans numbers in them. so yes it would be different I would think, what year did it go electric? Also why u looking for a different pcm, is yours fried?
    Last edited by 97rs4life; 03-01-2007, 07:46 PM.
    http://www.bowtiev6.com/

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    • #3
      Re: Ecm / Pcm

      Auto and manual were the same for '93 (because the trans wasn't electronic yet) but the 94-95 used different PCMs.

      There's a sticky at the top of the page on this.
      1994 Firebird 3.4<br />15.65 @ 86.8<br /><a href=\"http://www.funkz.net/firebird.htm\" target=\"_blank\">funkz.net/firebird</a><br /><a href=\"http://mywebpages.comcast.net/funkz/timeslips.htm\" target=\"_blank\">Timeslips</a>

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      • #4
        Re: Ecm / Pcm

        Thanks guys. I am not sure if it is fried. It will not give a scan tool any info and it is stuck in open loop. I am not sure if it is the PCM or a wiring problem. I found one really cheap on ebay, so I was going to try it and if it did not help, just resell it on ebay.

        It is from a 1995 3.4L with a 5 speed, so I do not think that it will work.

        I will keep looking.

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        • #5
          Re: Ecm / Pcm

          scan tools are great. i just picked me up once yesterday so everytime a throw a code i can look it up right then and there. :)
          Dave:
          00 Supercharged Camaro - RIP
          97 Turbo Camaro - Sold

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          • #6
            Re: Ecm / Pcm

            Originally posted by nascar24jd
            Thanks guys. I am not sure if it is fried. It will not give a scan tool any info and it is stuck in open loop. I am not sure if it is the PCM or a wiring problem. I found one really cheap on ebay, so I was going to try it and if it did not help, just resell it on ebay.

            It is from a 1995 3.4L with a 5 speed, so I do not think that it will work.

            I will keep looking.


            let me know if it ends up being your ecm because my car has been running rich too and everytime i try another sensor it does me no good lol worst part is the smell and the 14mpg

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