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idle fluctuating up and down

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Old Mar 21, 2006 | 01:04 PM
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Default idle fluctuating up and down

hey guys,i got my 98 ls1 done,but having that pesky idle fluctuation up and down when cold and on restarts,looking for tuner that can correct this,im located in ohio.any help greatly apprciated
thanks Dave
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Old Mar 21, 2006 | 03:40 PM
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Tough for us to help you out when you don't post your mods.
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Old Mar 21, 2006 | 04:48 PM
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Sounds like the IAC?
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Old Mar 21, 2006 | 05:53 PM
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I had that problem when I self-ported my TB: I epoxied and re-drilled IAC and Air holes, and that made my RPMS fluctuate up and down. Figured, the IAC hole was too small, and it "choked"
I made the holes bigger, and that fixed my problem.... But, yea - post your mods dood !
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Old Mar 21, 2006 | 06:01 PM
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what area of ohio? I'd be willing to help you out if you are local.
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Old Mar 22, 2006 | 03:51 PM
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hey gillbot since your willing to help any one local(I live in riverside) all I need is a cam install.Ill throw in beer or take you to pizzaz,Diamonds or cheeks.lol!
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Old Mar 22, 2006 | 08:11 PM
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Don't drink and don't go to tittie bars but I'd be more than happy to help anyone work on their car. All I ask is for help in retuen when I need it!
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Old Mar 22, 2006 | 11:02 PM
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with idle surges or stable rpms, yes it might be an IAC as some have suggested but also check out your TPS (throttle position sensor) its a $30 potentimeter and when it goes out, all types of erractic rpm behavior can happen.


Also if you had the battery disconnected for some time, it could just be your PCM relearning. Have you allowed the car to run for some time or even drive it.
If all your doing is starting it up and shutting down right away your pcm is still in a dumby restart loop.
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Old Mar 23, 2006 | 12:13 AM
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I'm located in north central Indiana and would be able to help you out.
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Old Mar 23, 2006 | 09:01 AM
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Gillbot I was just kidding about the nude bars.I married dont have aneed to go ,dont drink much either.I may take you up on your offer on help.Im not too memchanically inclined but if you need agood steak cut(Im the meat manager in Harshman rd Meijer)I can help you out,again I was just kidding about the nude bars sorry if I sounded offensive.
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Old Mar 23, 2006 | 09:04 AM
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Originally Posted by john5632
Gillbot I was just kidding about the nude bars.I married dont have aneed to go ,dont drink much either.I may take you up on your offer on help.Im not too memchanically inclined but if you need agood steak cut(Im the meat manager in Harshman rd Meijer)I can help you out,again I was just kidding about the nude bars sorry if I sounded offensive.
Wasn't offended at all. I do like steak though!

If you want to swing by and BS, i'm on Shull north of I70 in Huber Heights. Send me a PM and i'll give you directions. Also check out www.daytonfbody.org as that's my site and the local Fbody club.
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