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IAC question

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Old 08-07-2006, 10:29 PM
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Car: 87 GTA t-top
Engine: L98 350 w/RMT
Transmission: 700R4
Axle/Gears: 9 bolt BW 3.45
IAC question

Im having a problem with my idle, seems like my IAC isnt working properly.
The car idles rough, never consitant at idle and takes some time to start as well.
I dissconnected the IAC with the car running, didnt make any difference, I would think it would flat the idle, is that normal?
Is there a voltage setting I can check on the IAC or somehow I can test it?
Old 08-08-2006, 10:06 AM
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Car: 1992 Z28
Engine: 355
Transmission: 700R4
Look for the TPS/IAC reset prodedure in the tech section of this site. You need to do both at the same time.
Old 08-08-2006, 10:36 AM
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Car: 87 GTA t-top
Engine: L98 350 w/RMT
Transmission: 700R4
Axle/Gears: 9 bolt BW 3.45
Just cruising at idle feels like the car is surging, like jumps back and forth, struggles, is very annoying.
Old 08-08-2006, 05:16 PM
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Car: 1990 Iroc Z Convertible
Engine: LB9
Transmission: 700R4
Have you tested your injectore ressistance when they are hot and cold? My car had a problem similar to this when 5 of my injectores went south.
Old 08-08-2006, 09:33 PM
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Car: 87 GTA t-top
Engine: L98 350 w/RMT
Transmission: 700R4
Axle/Gears: 9 bolt BW 3.45
IAC was bad, replaced today runs better however I need to adjust my timing, still outta wack.
Thanks
I think I will look into some injectors soon as well.
Old 08-09-2006, 02:36 AM
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Car: 87 GTA t-top
Engine: L98 350 w/RMT
Transmission: 700R4
Axle/Gears: 9 bolt BW 3.45
I dont get it, ran the car tonite still has the surge like problem.
After installing it seemed better but now its still acting up, this is getting anoying and seems like anyone who checks it cant figure it out.
Im lost, could it be my ecm prom or injectors? tired of this ****.
Old 08-23-2006, 07:31 PM
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Car: 85 Monte Carlo SS...
Engine: T.P.I L98.
Transmission: TH350
Axle/Gears: 3:73 Posi
What year is your car again?? This is a common issue with the older TPI cars with the crappy Multec injectors...
Old 08-24-2006, 02:08 PM
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Car: 87 GTA t-top
Engine: L98 350 w/RMT
Transmission: 700R4
Axle/Gears: 9 bolt BW 3.45
Its an 87 GTA 350 TPI 22lbs injectors with the cold start injector, auto .
Old 08-24-2006, 02:23 PM
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Car: 87 GTA t-top
Engine: L98 350 w/RMT
Transmission: 700R4
Axle/Gears: 9 bolt BW 3.45
Now its 350 with the HSR intake, sorry it didnt post the edit.
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