what is causing my 1990 ford f150 xlt lariat w/ 5.8l engine only throw one spark from the coil no matter how long i hold the key forward, it will not start?
i have a 1990 ford f150 xlt lariat 5.8l v8 4x4 that will not start. It only throws a single spark from the coil to the distributor no mater how long i have the key turned over. I have replaced the computer, ICM, distributor, coil, plugs and wires, cap and rotor button, pickup coil and the fuses are all good nd new. please help me, i dont know what else to do. it was my grandfathers truck and it ran great but stopped one day and never cranked again. im in need of help and i dont know where else to go.
You are describing the classic Ford TFI module or distributor pickup failure, but check the voltage supply to the ignition coil first, then was the distributor a new or rebuilt? If it was rebuilt they most likely didn't check the pickup coil in the distributor. You can take the module and have it tested, I know NAPA here has a tester, maybe they have one in your area. If the module tests good then the pickup is in failure.
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