Chevrolet Lumina Problem Report
Chevrolet Lumina Check Engine Light With Code P0171 and/or P0174
The exhaust gas recirculation (EGR) tube which connects the EGR valve to the intake manifold may develop an engine vacuum leak, causing the Check Engine Light to illuminate with code P0171 and/or P0174 stored.
Still hasn't been fix. - renez24
I have replaced the EGR valve twice and the wire connector once. I cleaned the EGR valve today....
Check engine light comes on ONLY when driving at high speed when I let off the gas feed. Like t...
check engine light will not go out. what gives??
check engine light came on while driving for approx. 1 or 2 minutes...what could be problem?