Who has had a bad EGR?
Thread Starter
Joined: Dec 2001
Posts: 9,937
Likes: 636
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Who has had a bad EGR?
Who has had a bad EGR...and what were your symptoms?
Senior Member
Joined: May 2000
Posts: 651
Likes: 1
From: Neenah Wi.
My 89 GTA threw a code about a year after I bought it,and I had no idea what to do,so I took it down to the Chevy dealer and they hooked it up and said it was the egr,and egr diagnostic switch.I brought it home and sprayed a little Top engine cleaner up into the egr and worked the diaphram up and down a few times,and it hasn't thrown another code since....
Other than running a little rough,it didn't do anything out of the ordinary......
Other than running a little rough,it didn't do anything out of the ordinary......
Member
Joined: Jul 1999
Posts: 407
Likes: 0
From: Stuarts Draft, VA
Car: 88 GTA
Engine: modified L98
Transmission: 700r4
Axle/Gears: 3.27 9-bolt
If it gets stuck open, your engine will run extremely rough when it's cold, and will be very hard to start cold. When mine went it wouldn't even start unless I had the timing at 40*BTDC. 
The reason for this is that the heads don't have enough heat in them to burn off the excess exhaust gasses that are intrested to into the combustion chamber.
Anyway, it's easy to swap, and you can get it at any parts store for around $50.
The reason for this is that the heads don't have enough heat in them to burn off the excess exhaust gasses that are intrested to into the combustion chamber.Anyway, it's easy to swap, and you can get it at any parts store for around $50.
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