1989ford f150will not get fuel unless you jump relay try replace relay same problem is computter bad
Check the ground at the battery. The small one with the connector for corroded or broken This is the PCM/computer ground. This also has an EEC relay for the computer beside the fuel pump relay usually brown/black. This could be the problem too.
I'm sorry. I should have said check the small black ground wire at the battery.
it turn out after checking everything the computer bad
That's where I was going next.
Looking for a Used F-150 in your area?
CarGurus has 229,518 nationwide F-150 listings starting at $1,300.
Search Ford F-150 Questions
Ford F-150 Experts