Re: 1987 3.8L T-Bird- no power to fuel pump
I appreciate your help. I checked the fuses before I started. I checked the owners manual to identify the fuel pump relay fuse and it did not list it so I pulled each fuse under the dash and visually inspected them. Are there any fuses in the engine compartment? Anyhow the fuses must be ok and I must be getting 5volts to the ECM because I have 12 volts at the relay. There are four wires to the relay. The yellow is hot all the time. When I turn the key on the brown wire and the red wire have 12volts. There is also an orange wire with a blue stripe that goes to the fuel pump. When I jump the yellow or red wire to the orange/blue the fuel pump works. The fuel pump must be grounded seperately? Before I posted my problem I read on a different post that it might be a problem with the small ground wire off of the negative battery terminal. My negative cable with the small ground wire wasn't in the best condition so I replaced it when I was installing the new pump, relay, etc. I have the fuel line disconnected from the fuel filter because I wanted to pump gas through the old filter before installing a new filter in case I kicked up any sediment from dropping the tank. I did not realize the pump only ran for 1 second when the key was turned on. I thought it ran for a few seconds, I was probably missing it. I will install the new filter and try it.