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FORSFED · 10-10-2004

Ok, the way I understand the fuel pumps operation is as follows::

-Turns on for a few seconds with initial key on to pressurize the system.
-Next it shuts off.
-Turns back on while engine is cranking.

I have none of the above happening. I've traced everything back to the ecu and had no luck. The wiring is fine, the MPI relay is fine (can hear it clicking), ecu works, MPI fuse under hood is not burnt out. What does this leave??? I wired it to have keyed on power for the time being, but I'd much rather have it work with the factory wiring like it's supposed to...

10-10-2004	#12
FORSFED Join Date: Oct 2003 Location: White Bear Lake Posts: 109	Ok, the way I understand the fuel pumps operation is as follows:: -Turns on for a few seconds with initial key on to pressurize the system. -Next it shuts off. -Turns back on while engine is cranking. I have none of the above happening. I've traced everything back to the ecu and had no luck. The wiring is fine, the MPI relay is fine (can hear it clicking), ecu works, MPI fuse under hood is not burnt out. What does this leave??? I wired it to have keyed on power for the time being, but I'd much rather have it work with the factory wiring like it's supposed to...