I also posted this same message in the electrical post. I didnt know where to put it.
First I will preface this fact, I am an A&P mechanic. I work on airplanes not trucks. I have tinkered with cars all my life but only as a hobby not proffesionally. I do as much stuff as I can when I can read the directions.
the manual I have is a Haynes repair manual. Last night my truck quit. it ran out of fuel with a full tank. I just filled it so I know the gauge wasn't lying.
when trying to start it would fire but not continue to run. I did not hear the usual sound of the fuel pump running. I got out my manual and started checking what it told me.
1st I checked the relays, fuel pump and asd relays. The slots they plug into have power where and when they are supposed to. I checked the relays they have continuity and the coils ohm out as prescribed in the manual. I unplugged the line from the tank module and checked for power. I found none. I did confirm that I had a good ground and that I had continuity throughout the entire wire both power and ground from the power distribution center to the pump. I did not try putting 12 volts directly the fuel pump. didnt know if that would hurt anything. According to the wiring diagram the power comes from the start switch thur the fuse to the fuel pump relay. I pulled the cover off the top of the relay visually inspected it and tried manually closing the contacts and still the pump will not come on. all the relays are the same. I have switched some around and used the ones that I know worked to test but know luck.
What do I do next? any suggestion from any of you experts out there?
sorry for the lengthy post but I wanted to give you as much info as possible.
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