Classic fuel pump failure 89 S4
11-03-2018, 09:05 PM
#16
Chronic Tool Dropper
Lifetime Rennlist
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Lifetime Rennlist
Member
My pumps are new, less than 120 miles on them. I measured the draw at the pumps while the car was on the lift. 10 amps. New relays and a different CE Panel. the relay gets hot as hell, and kicks out. Got a wiring harness problem some where in the car. I have a spare harness that looks better than the one in my 89. Gonna change it all out, looks like a bitch of a job, but it's cooler here now. Perfect time, and a top end refresh too.
Don Buswell, and daughter, did my intake and valve covers. They look fantastic! Gonna get my shark back up and running. I hope!!!
Don Buswell, and daughter, did my intake and valve covers. They look fantastic! Gonna get my shark back up and running. I hope!!!
The heater for the oxygen sensor is the third load on the fuel pump realy, after the two pumps. Inspect the wiring and the connector to the oxy sensor, black cable that loops across the front of the CE panel, passes through a grommet on the side of the tunnel, to the sensor on the exhaust crossover at the top front of the catalysts. Pinching that cable risks a short between the two white wires inside, and additional load on the fuel pump relay.
