How to test EGR controller?
Thread Starter
Joined: Feb 2004
Posts: 735
Likes: 7
From: San Diego, CA
Car: 89 GTA
Engine: 6.0L Procharged
Transmission: T-56
Axle/Gears: 4.10
How to test EGR controller?
My car is acting a little like the EGR has an issue. Idle sticks high sometimes, and is slow to return to 800RPM. I tested the EGR valve and it seems to operate fine, but I'm not sure how to go about testing the controller? New ones are over $100 so I'd rather not have to swap it out just to find out.
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: How to test EGR controller?
Only way I know is to put power and ground to it and listen for the click as the solenoid engages.
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iTrader: (1)
Joined: Jul 2007
Posts: 1,141
Likes: 2
From: MA
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt
Re: How to test EGR controller?
My car is acting a little like the EGR has an issue. Idle sticks high sometimes, and is slow to return to 800RPM. I tested the EGR valve and it seems to operate fine, but I'm not sure how to go about testing the controller? New ones are over $100 so I'd rather not have to swap it out just to find out.
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