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      10-03-2012, 12:49 PM   #17
Some dude

Drives: E28 M5, E92 335i
Join Date: Sep 2011
Location: Northern VA

iTrader: (0)

Fuse 37 in the Junction Box. It will be behind the glove box. You don't have to remove the glove box, just empty it and remove the black divider at the back of the box. There will be a small card you can unfold and find the position of fuse 37.

If the fuse is OK, you may have a bad wire or some other problem between the pump and the DME harness. The DME communicates to the pump with a short digital signal to tell the pump how fast to run. With just power to the pump, it will run at a default slow speed. The DME signal then tells the module in the pump how fast it needs to run. There may be a fault on that line, a bad connector, or something else causing the communication to fail.
RRT Racing
E92 335i/6MT Dinan Stage 3: intercooler, oil cooler, intake, flash, exhaust, LW dual-mass flywheel.
Vishnu PWM methanol custom trunk mount, Diffsonline 3-clutch Salisbury custom diff, Ohlins Road and Track coilovers, Vorshlag camber plates, much more...
E28 M5 w/ buncha stuff, R171 SLK350