Hi i haver a 1990 Ford f150 XT lariat 5.0 ir hás two tank...
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Edward
213 days ago
Hello and thanks for your question. My name is \*\*\*\*\* \*\*\*\*\* I will do all I can to help.
Customer
213 days ago
Can i call
Edward
213 days ago
Can you turn the key ON, and tell me if you have power at TWO pins down in the fuel pump relay socket? If you do, then did you check the inertia switch , there is a fuel pump safety switch on that truck near the firewall on the inside of the truck, it's black with a red button on it, you want to be sure that button is pushed DOWN, and while cranking, you should have voltage to the inertia switch, if only one wire is hot, unplug it temporarily and jump it with a jumper wire or paper clip and see if that helps. I have also seen the fuel tank switch, the front to rear switch fail before.
I can't place a call right at this moment. But if you want to request one, an available tech will call as soon as possible.
Edward
213 days ago
You should see a PINK/BLACK wire at the fuel tank selector switch, it should be hot when cranking. If it's not, the problem is upstream from there, but if it is hot, you could jump the PINK/BLACK wire, to the RED wire for the front tank at the selector switch. and see if that fixed it. or get another tank selector switch for it, If it's not hot, try jumping the fuel pump relay with a jumper wire or paper clip from the yellow wire to the PINK/BLACK wire and see if it works then, if it fixes it, then it could be the PCM not grounding the fuel pump relay. Thank you and let us know if you have any further questions.
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Hi i haver a 1990 Ford f150 XT lariat 5.0 ir hás two tank the one in end rear is out only running on center tank. Now ive replaced the fuel pump relay and fuel fuse and then i turn the key and waited for the fuel pump to klick on ...
Hi i haver a 1990 Ford f150 XT lariat 5.0 ir hás two tank the one in end rear is out only running on center tank. Now ive replaced the fuel pump relay and fuel fuse and then i turn the key and waited for the fuel pump to klick on and it started. I waited for 3 houve tryed it again turn the key to hear the klick from the fuel pump but it didnt do it and it Will not start can you help Mechanic's Assistant: Can you turn the steering wheel at all? And what about the key? Is it worn or damaged? All those are good Mechanic's Assistant: Are you fixing your F150 yourself? What have you tried so far? Yes im doing myself put New fuel relay switch and fuel relay harness put brand New fuse in the fuse box Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? I has it running for 3 days and When i turn the key to hear the fuel pump kick on it start and Now i do the same thing i turn the key to hear the fuel pump kick on but it wont kick on it start i dont think the fuel pump is bad