2000 Chevy Lumina ignition will not turn off

KEV-E-KEV

MEMBER
2000 CHEVROLET LUMINA
6 CYL
2WD
AUTOMATIC
150,000 MILES

Hi 2 car pro,

My car is in the shop as we speak. The mechanic repaired my head gaskets. The put went fairly well except when he tried to turn the engine off. For some reason when the key ignition is put in the off position it still runs and dsah light's remain on unless positive battery cable is disconnected. The mechanic tried everything double checking all electrical plugs. Putting in a new ignition switch. And changing half the fuses. Still the problem will not seem to correct. He said he never seem a condition like this so we are pretty much at a stand still.

Can you offer anything positive that could help me get back on the road. I have a 94 mile oneway commute.

1 Reply

JDL

MECHANIC
16,098 POSTS

I'm not sure what I could tell you that your mechanic hasn't? In the diagram, the elec ign fuse 15 amp should not be hot unless the ignition system relay, also in the diagram, is energized. That fuse supplies primary voltage to the ignition module, is that circuit hot with the key off? The voltage to the coil side of relay probably goes hot when you turn on the key, key off no voltage. That circuit could be shorted to voltage, somewhere? Maybe the relay is faulty??