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Ok... Something else might be wrong...

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  • Ok... Something else might be wrong...

    Is there any certain way that I am supposed to install my IAC?? I bought a new one for $70. I installed it and the car still runs exactly the same!?! Damn it. I must of did something wrong? Do I have to reset the PCM? Or do you think that its something else? Driving me nutso...
    1995 Grand Am GT
    3400 V6 / 4T60-E / Engine Swap
    3400 Engine Swap Guide Version 2.5 is Available!
    www.3400swap.com

  • #2
    I would say that you want to reset the PCM. You will need to drive around for a while for the IAC to "learn" though.

    Sounds dumb, but isn't the TPS related to the IAC somehow? I thought I saw somewhere that the IAC gets a reading from the TPS...... Anyway, you could always look at that too.

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    • #3
      The losy instructions that it came with said that after you have it installed you have to drive over 40mph to fully seat the IAC (I'm guessing after you reset the PCM?) I'll try it out and see what happens...
      1995 Grand Am GT
      3400 V6 / 4T60-E / Engine Swap
      3400 Engine Swap Guide Version 2.5 is Available!
      www.3400swap.com

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      • #4
        My IAC was really dirty and after I cleaned it the thing still ran like crap. I took it for a drive (one foot on brake, one on gas.. stalling like hell). The next time I started it up the thing ran fine.

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        • #5
          I tried cleaning the other one, but that didn't help. So I bought a new one and nothing happened. I hope there's nothing else wrong... Damn car, of course this shit happens at the start of winter... BLAH.
          1995 Grand Am GT
          3400 V6 / 4T60-E / Engine Swap
          3400 Engine Swap Guide Version 2.5 is Available!
          www.3400swap.com

          Comment


          • #6
            Ok, well I tried resetting the PCM. Of course nothing happened... It will NOT start without giving it gas and it has a varied idle. It has to be something else. I'm guessing a sensor isn't right? I also heard that sometimes the '95's engine wiring harnesses maybe different from one another?!? Because I had to change my orginal... But that doesn't seem right. And I changed the igintion coils and modules a couple of times, and they both can't be broken. It acts funny too, when I pump the brake pedal, the rpms go up to normal?!? This is driving me crazy. Any ideas?
            1995 Grand Am GT
            3400 V6 / 4T60-E / Engine Swap
            3400 Engine Swap Guide Version 2.5 is Available!
            www.3400swap.com

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            • #7
              Since you are mentioning pumping the brake, that could be a vacuum problem. The brake uses vacuum from the engine to assist it. That might at least give you a new direction to look...
              -Brad-
              89 Mustang : Future 60V6 Power
              sigpic
              Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blog

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              • #8
                But could that cause it not to ever want to start? When ever I trun it over when the motor is cold (not been running for a long time), it seems like its not getting something... but I don't know what it is. I'll check the vacuum thing tomorrow.
                1995 Grand Am GT
                3400 V6 / 4T60-E / Engine Swap
                3400 Engine Swap Guide Version 2.5 is Available!
                www.3400swap.com

                Comment

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