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IAC mod, Base idle now 1100...

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Old 10-19-2007, 09:23 AM
  #1  
Sxynerd
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Default IAC mod, Base idle now 1100...

...from 850rpm's. It drives great except when I don't give it enough gas that is and it tries to stall out on me. Is there any reasoning or way to adjust that idle without taking it too my tuner and having him adjust it? He actually told me not to do the mod but he couldn't add enough Decay for me to be happy so I did it anyway.

No vacum leaks, Manual trans, SCT flip tune, Mac 75mm tb, any thoughts????
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Old 10-19-2007, 10:25 AM
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Chopper
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Default RE: IAC mod, Base idle now 1100...

It sounds like the mix is leaning out somehow.You say there are no leaks but are you 100% sure?
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Old 10-19-2007, 10:35 AM
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Dsmfighter
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Default RE: IAC mod, Base idle now 1100...

Wait there is an IAC mod? I wouldn't mess with your IAC man, that controls more then just your idle. Why don't you just adjust your T/b stud and nut?
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Old 10-19-2007, 10:49 AM
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Sxynerd
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Default RE: IAC mod, Base idle now 1100...

100% pos there's no leaks, It's irritating to say the least. I guess I'll go out and make another and see what it does.
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Old 10-19-2007, 11:23 AM
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H0SS302
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Default RE: IAC mod, Base idle now 1100...


ORIGINAL: Dsmfighter

Wait there is an IAC mod? I wouldn't mess with your IAC man, that controls more then just your idle. Why don't you just adjust your T/b stud and nut?
lol look it up....it dosnt hurt anything if you do it how its supposed to be done. adjusting the tb wont do what the mod is intended to do.


And nerd, screw the gasket bro, use a plug in the iac hose, just drill a hole to the size you want and stuff it in the tube, much easier and you can swap out hole sizes....in seconds
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Old 10-19-2007, 12:28 PM
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GhostRider02GT
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Default RE: IAC mod, Base idle now 1100...

Mine did that too, so I just took it off, everytime I made the hole bigger, it idled higher untill I put it back to stock
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Old 10-19-2007, 01:41 PM
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Chopper
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Default RE: IAC mod, Base idle now 1100...

I started out with a 3/16 inch hole and the bigger the hole the faster the idle.
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Old 10-19-2007, 01:55 PM
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GhostRider02GT
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Default RE: IAC mod, Base idle now 1100...

but also with any smaller hole than that of the original will NOT compensate for the AC, so at idle with no AC you may be idleing at 1100, then you turn the AC on and idle drops to 850-900, so its just annoying and I took mine out.
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Old 10-19-2007, 02:02 PM
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H0SS302
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Default RE: IAC mod, Base idle now 1100...


ORIGINAL: GhostRider02GT

but also with any smaller hole than that of the original will NOT compensate for the AC, so at idle with no AC you may be idleing at 1100, then you turn the AC on and idle drops to 850-900, so its just annoying and I took mine out.
mine idles at 850 w/o the ac on..i never use the ac so i dont worry about it. but with my ac on the idle drops for a sec or 2 then returns to normal...i think the way my iac mod is set up has ALOT to do with it
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Old 10-19-2007, 04:29 PM
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cliffyk
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Default RE: IAC mod, Base idle now 1100...

Did you disconnect the battery for 5-7 minutes after installing the restriction? The will clear the KAM (Keep Alive Memory) and force the PCM to relearn the idle trim...
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