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JL8Jeff · 09-24-2007, 01:20 PM

Go through all your fuses. I had a Quad Driver code on my old 93 Indy Pace Car and it turned out to be a fuse had blown for the AIR pump. Turned out the AIR check valve went bad, let warm exhaust air back into the AIR lines creating condensation in the winter. That ran down into the pump and eventually filled it with water. That froze solid and the electric pump motor couldn't turn and tripped the fuse. So look at all your fuses to start with and if you find one blown and you replace it and it goes again, then you have an issue with that related component.

09-24-2007, 01:20 PM	#5
JL8Jeff Hippy Mod, Bergermeister Meisterberger, Moderator Join Date: Aug 2004 Location: Ewing Posts: 6,216 iTrader: (3)	Go through all your fuses. I had a Quad Driver code on my old 93 Indy Pace Car and it turned out to be a fuse had blown for the AIR pump. Turned out the AIR check valve went bad, let warm exhaust air back into the AIR lines creating condensation in the winter. That ran down into the pump and eventually filled it with water. That froze solid and the electric pump motor couldn't turn and tripped the fuse. So look at all your fuses to start with and if you find one blown and you replace it and it goes again, then you have an issue with that related component. __________________ 69 Z28 JL8 4 wheel disc brakes - being restored 09 Silverado Z71