High idle 91 GTA

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04-25-2020, 02:41 PM

goalieforlife

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Car: 1991 Pontiac Trans Am GTA

Engine: V8 305

Transmission: Automatic Transmission

High idle 91 GTA

my 91 GTA 5.0 Tpi and she idles really really high.. at almost and sometimes over 1000 Rpm, the temperature hand is always on cold.. thoughts? .. cooling sensor was changed... should i change the sender?

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04-25-2020, 05:12 PM

Tuned Performance

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Car: 1967 Camaro, 91 z28

Engine: Lb9

Transmission: M20

Axle/Gears: J65 pbr on stock posi 10bolt

Re: High idle 91 GTA

Vacuum leaks ?

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04-25-2020, 06:05 PM

goalieforlife

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Car: 1991 Pontiac Trans Am GTA

Engine: V8 305

Transmission: Automatic Transmission

Re: High idle 91 GTA

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Originally Posted by Tuned Performance

Vacuum leaks ?

not that i know of i will get her a new IAC valve

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05-01-2020, 01:54 AM

90_WS6_Formula

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Car: 91 Z28

Engine: L98

Transmission: 700R4

Re: High idle 91 GTA

I'd try cleaning the one you have first. While you ere at it check the condition of the connector as well.

I'm currently having the same issue. Mine idles around 1500. I've checked all the vacuum lines and even took apart, cleaned, and reassembled the TPI intake. It's better now but not where it should be. ..