1994 BMW 525i Fuel Pump

OLIVER BEALE

MEMBER
1994 BMW 525I
6 CYL
2WD
MANUAL
13,000 MILES

I had my fuel pump bench checked and it's OK. I replaced a bad fuel pump relay. Fuel pump fuse doesn't get power. I was told it must be the DME. I have two questions; Can I get a used DME and program it to my car? And if not can I hard wire my fuel pump with a toggle switch in the cockpit to turn the fuel pump on when I'm using the car. If so, how exactly do I wire it?
P.S. I did run a jumper wire from the Green/Violet wire at the fuel pump to the 6 or 9 slot which is putting out 12 volts at the relay female recpt, and got the fuel pump to come on but the motor still won't start.

2 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Check if you're getting spark and the injectors are pulsing

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Wednesday, October 27th, 2010 AT 11:02 AM

OLIVER BEALE

MEMBER
3 POSTS

What about this DME module? Can I use one from another car and program it to my car. And if I wire the fuel pump like I said should it work?
I can see the spark plugs but how do I get to them. I took the 4 hold downs on the fuel rail but it won't come up, is it as simple as removing the two fuel lines? And how do I check for injector pulse?
Thanks for your help in advance.