Thread: Iac keeps throwing check engine light

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  1. #1 Iac keeps throwing check engine light 
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    I have replaced it already and everything looks fine idk what is wrong any ideas my motor does pulse any tips

    Taz238
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  2. #2 Re: Iac keeps throwing check engine light 
    GT Level Member lewis1952's Avatar
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    relearn it
    Turn key for 2 sec then off for 10 sec,on for 2 off for 10 then try starting it.
    If this doesn't work with key on push pedal to the floor hold for 2 sec,then pump it to the floor and release it 5 times in 7 sec
    Also make sure your IAC is adjusted properly
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  3. #3 Re: Iac keeps throwing check engine light 
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    How do u adjust it properly

    Taz238
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  4. #4 Re: Iac keeps throwing check engine light 
    GT Level Member lewis1952's Avatar
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    from the bolt hole to the end of the pintle can be no more than 1 and 1/8 inches if it is push it in
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  5. #5 Re: Iac keeps throwing check engine light 
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    Its in the stock hole that the old one was in I have that slinky looking rubber piece and on the end of that a cone filter

    Taz238
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  6. #6 Re: Iac keeps throwing check engine light 
    Killa Bee Scottydoggs's Avatar
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    you mean a ait? air intake temp sensor? the little one in the intake tube?

    if so check its wires. look for damage to the insulation like cracks or bare wire showing.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  7. #7 Re: Iac keeps throwing check engine light 
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    Ya I didn't see any damage

    Taz238
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