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High RPM's? Idle air control opens?

This is a discussion on High RPM's? Idle air control opens? within the Computer & Tuning forums, part of the LSx Technical Help Section category; The IAC position is in steps; it's a stepper. They are commonly referred to as counts....

  1. #21
    TunedbyFrost.com Tuner Frost's Avatar
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    The IAC position is in steps; it's a stepper. They are commonly referred to as counts.

  2. #22
    Junior Member Shannon2356's Avatar
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    Hey guys!
    Thanks for all the help so far.

    I called Street and Performanca today. They said it could be a few things.

    1. He siad it could be dirty fuel injectors. I put 5 more gallons of gas in it and a bottle of Fuel Injector cleaner. And let it run for a while. And it has not changed anything yet.

    2. I had to make a air box to relocate the Mass Air Meter. And it did not have any kind of seal around it. So I installed some closed cell foam around it. And that did not make any differance.

    The comp. is made for a 98 Camaro. So it is set up for the cable throttle body. And they did test it.

    This is what I also did today.

    I reinstalled the old IACV. And left it unpluged. They engine idles so slow. It will not idle when its cold. I DO NOT have a tach. on it. But I dont think its turning 800rpm's. Its running so slow its not even charging. And the oil gauge only shows about 10 lbs.

    NOW with it running so smooth and slow. I dont think its the fuel injectors. It just runs to good for that. And revs up fine too!

  3. #23
    Veteran 0rion's Avatar
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    I was thinking about this today a little bit. One way to check that set screw would be to look at your throttle body voltage. I've made jumpers before to stick into the connectors so I don't have to cut into wires. I'll just stick a small wire into each side of the connector and put a voltmeter on those wires. Did that when chasing down a fuel pump issue a couple years ago. At idle that voltage should be in the .45-.55 range.
    Another thing you can try to do is a tps reset.
    ignition off- unplug tps
    ignition on engine off for a few seconds
    ignition off-plug tps back in

  4. #24
    Junior Member Shannon2356's Avatar
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    I will try that tomorrow.
    OH!
    If I pull out the old IACV and start it. Then plug it back in. It will stay at a low idle for a good bit. And sometimes until I rev the engine. Once I do that it revs up and never comes back down.

  5. #25
    Junior Member Shannon2356's Avatar
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    OK! I have a scan tool. Its a MAC. Would anyone on here give me a call. I would like to talk to someone while I am standing by the car. Or maybe someone can tell me some else to look for.
    I have looked at the TPS and it is working perfect.
    Thanks for all the help guys!

  6. #26
    Member devil6rr's Avatar
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    was this issue ever resolved, i think i have a similar problem

  7. #27
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    2004 gto

    sorry for bumping an old thread but I have this same issue. My car idles at 2000 with the IAC connected. Once i disconnect it, the idle goes down to the normal RPM.

    OP were you able to fix your issue. If so how did you go about it? (I sent you an email as well)

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