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Welcome to the forums!_x000D_
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You could also try tapping on the IACV with a screw driver to see if the idle will change._x000D_
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Does this idle issue occur more when cold or after the engine has warmed up?Perhaps check the throttle cable again but this time try snapping the throttle with the cable disconnected, if the problem goes away you may have a throttle cable problem yet even thought I remember you say you checked it.
since you have other cars does any of them idle smooth? if so i would try swaping TBIs and see if that fixs it. GM is kinda known for the rough idle issue with TBI and because of that i would be looking at that first.
[quote]Quoted From moparfan: _x000D_
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since you have other cars does any of them idle smooth? if so i would try swaping TBIs and see if that fixs it. GM is kinda known for the rough idle issue with TBI and because of that i would be looking at that firsQuoted From dreamer2355: _x000D_
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I thought these came with TPI systems? Interesting._x000D_
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i guess i was going off of him stating throttle body. but i think you are right. it should be TPI. but the non formulas and lower end firebirds haI ran into this same problem once with a 305 TPI. The previous owner was tired of the idle problems so he unloaded the car on me for a fair price. In my situation the problem ended up being a sticky EGR valve. It would stick open sometimes. Sometimes the
An easy way to check for an EGR issue is to pull up on the valve at idle, I can sometimes reach my fingers in there and pull up on them.
[quote]Quoted From EricTheCarGuy: _x000D_
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An easy way to check for an EGR issue is to pull up on the valve at idle, I can sometimes reach my fingers in there and pull up on them.
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