Lost Fuel Pressure!

Mike Cox

Member
Jun 8, 2004
20
0
:mad: My 95 D1 is having issues starting. I put a fuel pressure guage to it and have squat for fuel pressure.

I started electrical checks and traced back to the fuel pump relays in the passenger side footwell. I have nothing coming out of the Fuel Pump Relay. I changed it out with the Main Fuel Relay and get the same results.

Power in, no power out.

Does anybody have any suggestions, or know more about this circuit?

Would a bad ECM cause this. IT doesn't appear so by the schematics, but like I said, this is my first time running this type problem down.

Thanks

Mike
 
S

Steve83

Guest
There are 4 wires to the relay (maybe 5). When it's on, you should have 12V on 3 and ground on 1. (If there's a 5th, it will be neutral or grounded with resistance when the pump is on.)
 

Mike Cox

Member
Jun 8, 2004
20
0
Final Issue was a bad Fuel Pump.

It seems that after turning the Ignition Switch to Position 2, you only have several seconds to check the voltage, then the ECU shuts down the relay.

Hope this helps somebody else in the future.

Mike