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help!

This is a discussion on help! within the General Help forums, part of the LSx Technical Help Section category; Ok my car is HP tuned and we have went over this and over this. When i drive threw town ...

  1. #1
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    Red
    1998 Trans Am

    help!

    Ok my car is HP tuned and we have went over this and over this. When i drive threw town slowly and hit the gas just a little or hard don't matter and let of the gas fast the car drops down to 500 to 1000 rpms or lower,and wants to cut off! What to do? And also when your out driving and need to go into reverse and back into drive whatever the car does the same thing! What to do please help! Good bit of mods if you need to know. Thanks

  2. #2
    Military Muscle :usa: MYSCZ06's Avatar
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    Millienum Yellow
    2003 Corvette Z06

    take your car to pcmforless and drop it off to Alvin and you will be good!

  3. #3
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    Red
    1998 Trans Am

    Where is this place at? Number contact what and how?

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    cutting and welding mark21742's Avatar
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    hugger orange
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    do you know what your IAC percentage is? did you try adjusting the close throttle stop stub screw?

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    Red
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    I'm not sure sorry. I have a new 92mm fast TB and no i have not. With 92mm fast intake. With much more if that helps at all.

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    cutting and welding mark21742's Avatar
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    hugger orange
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    Quote Originally Posted by jesseheel View Post
    I'm not sure sorry. I have a new 92mm fast TB and no i have not. With 92mm fast intake. With much more if that helps at all.
    it almost sounds like your maxing out the IAC motor, look on the close throttle stop and see if there is an adjustment screw (on the stock tb its a 7/32 allen head svrew underneath the stop).....with the motor OFF try to screw it in about 1/3 turn at a time, then start the car and see where your idle sppeed is

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    Where does it need to be at?The idle that is. When i start the car it idles at 900-1100 just sitting still. Does it need to be lower? I may have miss spoke. The car drops down around 100-200 rpms well below 1000. Sorry

  8. #8
    cutting and welding mark21742's Avatar
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    Quote Originally Posted by jesseheel View Post
    Where does it need to be at?The idle that is. When i start the car it idles at 900-1100 just sitting still. Does it need to be lower? I may have miss spoke. The car drops down around 100-200 rpms well below 1000. Sorry
    what are your cam specs?

  9. #9
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    Red
    1998 Trans Am

    hot cam @ 0.50 in. 219int./228exh. lift.525/.525 with a 3200 tci stall mid length headers high flow cats .need any more

  10. #10
    cutting and welding mark21742's Avatar
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    hugger orange
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    sorry, also are you an a4, or M6?

  11. #11
    cutting and welding mark21742's Avatar
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    Quote Originally Posted by jesseheel View Post
    hot cam @ 0.50 in. 219int./228exh. lift.525/.525 with a 3200 tci stall mid length headers high flow cats .need any more
    your idle sounds alittle high, but not bad. I have mine down to 800 with a 220/224 .570/.580 112lsa and 3,800 stall

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    my bad a4

  13. #13
    cutting and welding mark21742's Avatar
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    hugger orange
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    I had the same problem with mine and fixed it by adjusting the stop screw, my IAC was maxing out

  14. #14
    cutting and welding mark21742's Avatar
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    Quote Originally Posted by jesseheel View Post
    my bad a4
    lol yeah after I asked I saw you posted 3,200 stall.......stupid slow phone lol

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    Really, because its a little scary i cut off in the middle of the street the other day. So turn it down a little at a time? And how low is to low?

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    Quote Originally Posted by mark21742 View Post
    lol yeah after I asked I saw you posted 3,200 stall.......stupid slow phone lol
    Ha its all good bud. Thanks for helping, hope this helps. Not cool when your car cuts off in front of people!!!

  17. #17
    cutting and welding mark21742's Avatar
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    Quote Originally Posted by jesseheel View Post
    Really, because its a little scary i cut off in the middle of the street the other day. So turn it down a little at a time? And how low is to low?
    try setting the stop screw to your idle now, then after you aren't stalling anymore, drop your (desired idle speed) in hptuners down by 25 rpms at a time and try it.
    also in the (idle spark adapt) add afew more degrees of spark advance and retard (more advance, higher idle. more retard, lower idle)......your spark timing at idle can work a lot faster than the IAC motor.

    if your looking at the spark advance on the laptop at idle it will look like the rocky mountains ( real peaky)

  18. #18
    cutting and welding mark21742's Avatar
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    hugger orange
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    Quote Originally Posted by jesseheel View Post
    Ha its all good bud. Thanks for helping, hope this helps. Not cool when your car cuts off in front of people!!!
    lol trust me I know, its happened to me

  19. #19
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    Ok i'll take it to the shop and tell my guy,because to be honest i don't know a lot about the whole tuning side of thing. That HP tuner takes knowing what you are doing or you will really screw thing up.lol

  20. #20
    cutting and welding mark21742's Avatar
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    Quote Originally Posted by jesseheel View Post
    Ok i'll take it to the shop and tell my guy,because to be honest i don't know a lot about the whole tuning side of thing. That HP tuner takes knowing what you are doing or you will really screw thing up.lol
    lol I beat my head against the wall for about a month trying to learn it and tune mine (i got lots of help from people on here) but it is just so indepth that its almost mine blowing, and you make one adjustment here and then need to change two or three other things in different sections to get it to do what you want

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