Chevrolet Lumina EGR Valve Test

The Egr Light Will Not Go Out, And The Engine Runs A Little Rough. I Also Have Some White Smoke Out The Tail Pipe. I Replaced The Egr Valve...

How Do I Check The Erg Wires With A Multitester. I Mean What Amps Do I Use

First Code Was Miss In Cyl. Five. Since Wires Had Over 100,000 Miles On Them ,i Replaced Them. Reset Comp. Then I Got Code For Heater...

I Brought A 1993 Chevy Lumina Form A Private Owner A Year Ago It Had A179,000 Miles On It When He Let Me Test Drive It Seemed To Be Fine....

I Have A Schematic Telling How To Test A Digital Egr Valve Wireing, It Say, "test Light Connected To Battery Voltage".the Question I Have Is...