Trouble with 89 GTA
Thread Starter
Junior Member
Joined: Aug 2012
Posts: 2
Likes: 0
From: Germany
Car: 89 Trans Am GTA
Engine: 350
Trouble with 89 GTA
I have a problem with my 89 GTA which keeps getting worse: the idle speed is becoming to low, so when I have to stop, I apply the brake with my left foot and keep the right one on the gas, to keep it from dying on me.
Other times the idle is to high. I come to a stop and it's idling at up to 1300 rpms.
While driving, it feels kind of rough. No error code. Any ideas?
Other times the idle is to high. I come to a stop and it's idling at up to 1300 rpms.
While driving, it feels kind of rough. No error code. Any ideas?
Supreme Member
iTrader: (29)
Joined: Sep 1999
Posts: 1,410
Likes: 2
From: Location, Location!
Car: 92 T/A 'vert
Engine: Mild .040 over L98 4 bolt mains
Transmission: Mostly stock 700R4, 2600 Vigilante
Axle/Gears: LS1 3.42
Re: Trouble with 89 GTA
Dirty/failing IAC.
Joined: Oct 2001
Posts: 12,232
Likes: 1,160
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Trouble with 89 GTA
Vac leaks, dirty/failing MAF, sticking egr, coolant temp sensor failing..
scan tool and factory service manual from HELM will help tons.
scan tool and factory service manual from HELM will help tons.
Last edited by TTOP350; Aug 26, 2012 at 10:14 AM.
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