Idle up/down
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Joined: Sep 2008
Posts: 178
Likes: 1
From: Atlanta
Car: 1992 Z28
Engine: 305
Transmission: 5 speed
Axle/Gears: 3.42
Idle up/down
Im currently on PowerTour and the car has been doing fine until today. Each time I come out of gear or start it up the idle is real high (as high as 2k) but will fall to normal after about 10-15 seconds. Any ideas? I'm on the road but can stop and get a part if needed. Thanks in advance.
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
First make sure the throttle isn't hanging up mechanically. That's usually something with the cable or a dirty TB.
I'm not the best versed TPI guy out there, but from what I've seen here, a dirty IAC is often to blame for idle speed problems.
I'm not the best versed TPI guy out there, but from what I've seen here, a dirty IAC is often to blame for idle speed problems.
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