89 iroc z rough idle at night/colder temp
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Junior Member
Joined: Aug 2011
Posts: 10
Likes: 0
From: Memphis,TN
Car: 89 Iroc Z 350 TPI
Engine: L98 350
Transmission: 700R4
89 iroc z rough idle at night/colder temp
89 iroc z always is hard to start and has spiffy idle when temp changes. I know it has something to do with the intake air temp sensor because i took it to advanced muffles (Memphis TN) and they are tryna charge a arm and leg to replace/fix it. Can someone help/tell me if this is a job i can do on my own and if so pictures and details are greatly appreciated. Thank you
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iTrader: (3)
Joined: Nov 2001
Posts: 2,428
Likes: 2
From: Fairview Heights Illinois
Car: 1986 Irocz
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.25:1
Re: 89 iroc z rough idle at night/colder temp
The air temp sensor is for controlling the EGR function. You could disconnect the EGR to test if it makes a difference. The car should idle ok without either the MAT or the EGR. If you're going to attempt to fix yourself, then you have to start troubleshooting.
Thread Starter
Junior Member
Joined: Aug 2011
Posts: 10
Likes: 0
From: Memphis,TN
Car: 89 Iroc Z 350 TPI
Engine: L98 350
Transmission: 700R4
Re: 89 iroc z rough idle at night/colder temp
well in that case ill probably take it back to the shop then lol...thanks man
Joined: Dec 2004
Posts: 16,740
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: 89 iroc z rough idle at night/colder temp
If that fixes it you can do the mat relocation kit instead of pulling the plenum there usuall $40 bucks and you can easly install it in your air filter cover.
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