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would anyone know how to fix a irratic idle untill warm

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Old 09-27-2003, 10:36 PM
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Default would anyone know how to fix a irratic idle untill warm

i have a 98 camaro ls1,with a 598 lift comp cam,several other mods,bought car already done,when first starting idle will go up and down till warmed up,was told it was due to the cam and running rich when cold,is there a fix for this,anyhelp would be greatly appreciated,thanks Dave
Old 09-27-2003, 10:55 PM
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Default Re: would anyone know how to fix a irratic idle untill warm

Only fix I know is to put the stock cam back in hehehe. Seriously though...have you drilled the throttle body any? I did that in small gradual steps with mine and it's gotten way better.
Old 09-27-2003, 11:49 PM
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Default Re: would anyone know how to fix a irratic idle untill warm

it has a hole drilled in it bout 1/4 inch,what size did u go to and how long does yours still do it thanks
Old 09-28-2003, 08:41 AM
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Default Re: would anyone know how to fix a irratic idle untill warm

Mine is just under 1/4". I have a pretty big cam and could probably go the full 1/4" though. Before I drilled it I would have to keep giving the car gas when I started it up for a few minutes then it would still hunt for awhile. It was always stalling at stops. Since then I just pedel it for 10 or 15 seconds on startup and it idles by itself and it alot more drivable in town. If you're hole is already 1/4" I wouldn't go bigger. That's the largest they say to go.
Old 09-28-2003, 10:12 AM
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Default Re: would anyone know how to fix a irratic idle untill warm

You need some tuning

You have to scale the Main VE table a bit to help start ups...
Old 09-28-2003, 03:15 PM
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Default Re: would anyone know how to fix a irratic idle untill warm

Jack up the the throttle follower decay some; the reason it hunts is because the PCM is overcompensating with the cam.
Old 09-28-2003, 04:04 PM
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Default Re: would anyone know how to fix a irratic idle untill warm

tthanks for the info,im an old school guy lol can you explain more of what i need to do and do i need lsi edit to accompish this,thanks for your help Dave




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