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Old 09-02-2009, 01:19 AM   #1
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Idling too low

I have a 99 GT completely stock and it has idled too low ever since I bought it. I have to give it RPM's when im sitting still so it doesnt cut out on me. What do I need to replace?
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Old 09-02-2009, 01:38 AM   #2
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Re: Idling too low

IAC
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Old 09-02-2009, 08:09 AM   #3
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Re: Idling too low

the IAC (intake air temp control) or idle bypass valve is located on the upper intake and is round cylinder shaped~ that may be it. Also clean the MAF sensor very well.
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Old 09-02-2009, 08:42 AM   #4
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Re: Idling too low

Also try getting some electrical cleaner and clean your MAF. Clean your throttle body also when you replace the Idle Air Control Valve (IAC). You could try to clean the IAC before you replace it. If you need a picture, do a search on this forum for IAC and the last thread about it has a picture.
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Old 09-02-2009, 09:01 AM   #5
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Re: Idling too low

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Also try getting some electrical cleaner and clean your MAF.
I've always use rubbing alcohol, very cheap and works great. yes, as spector and saleen stated, clean the maf, the maf if dirty will cause all kinds of idling/running issues.
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Old 09-02-2009, 10:18 AM   #6
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Re: Idling too low

I use electrical on contact no residue so I dont have to touch it but alcohol is fine i just dont like messing with the wires they are far to tiny
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Old 09-02-2009, 11:01 AM   #7
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Re: Idling too low

Ok thanks you guys, i cleaned the MAF last night and thought that fixed it but obviously not because it kept tryin to die on me this morning, i will clean the IAC and hope that works. Where can I get that star like tool for the 2 bolts on the MAF? Dealership?
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Old 09-02-2009, 11:15 AM   #8
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Re: Idling too low

You can buy them at any autoparts store or walmart, homedepot, etc. They are called Torx bits.
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Old 09-02-2009, 04:21 PM   #9
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Re: Idling too low

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You can buy them at any autoparts store or walmart, homedepot, etc. They are called Torx bits.
make your you get the ones with the hole in the center, if you don't you can take a small chisel and pop the nipple off, I would replace it with a regular machine screw.
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Old 09-02-2009, 04:42 PM   #10
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Re: Idling too low

Interesting, mine didn't have the security torx bits. In fact, I believe mine may just be a basic hex head now that I think about it.
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