Rough Idle
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Joined: Dec 2010
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Rough Idle
Hey There Gents,
I have a 1992 FireBird, v8 TBI. When i go to start my car up it has a rough idle, it will drop rpm's like it is about to die then gain rpm's. Once i put the car in drive the car runs fine and idles fine after it is warmed up. I am thinking it may have something to do with the throttle body any sugestions? thanks in advance!
I have a 1992 FireBird, v8 TBI. When i go to start my car up it has a rough idle, it will drop rpm's like it is about to die then gain rpm's. Once i put the car in drive the car runs fine and idles fine after it is warmed up. I am thinking it may have something to do with the throttle body any sugestions? thanks in advance!
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iTrader: (1)
Joined: Nov 2008
Posts: 1,697
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From: Michigan
Car: 86 IROC Z, 92 RS
Engine: 305 4bbl, 305 TBI
Re: Rough Idle
Sounds like the throttle positioning sensor, or the idler air control. Both are on the left side of the throttle body.
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