Greetings all! I am working on a 1986 f150 fuel injection V8 . The owner left the key stuck in the start position and the truck ran for a period of time MAKING A LOT OF NOISE until shutting off by itself. I discovered the starter quite burnt up and the starting solenoid burnt out. After replacing starter and solenoid truck cranked and had spark but didn't run, no fuel pressure. I grounded pin #6 in test plug and made the pump run and motor still didn't run. When starting fluid is sprayed into throttle body it runs , therefore I believe the injectors aren't firing. All fuses and fusible links I can see are good, how would you guys ( and gals!) proceeded?....I bleed FORD BLUE and have a friend cussing this truck ( his) please help! THANKS IN ADVANCE

 

I would change out the ignition module. If the computer doesn't see signals from the distributor, it thinks the engine is not turning and will not fire the injectors or activate the pump.

 

Thanks for the info Dave F you recommend changing the ignition module on the side of the distributor correct?....thanks for the help!

 

Yes. If it really doesn't have the signals from the distributor, it could be several other things like wiring and the pickup inside the dist. And it could be the module also.

If you want to do some checking, you can pull the codes, if it's missing the pulses there will more than likely be a code the computer will spit out. Here's how to pull the codes with just a testlight.

EEC IV Self Test hookup

 

Greetings all! Small update on this...it will run on starting fluid so the ignition system is functioning and the fuel pump can be made to run by grounding pin 6 in the test plug but it doesn't run. Still have to check for codes...

 

Check the relay up by the gas pedal, I believe it is the one that powers the ecu. I had the same problem and that relay was the culprit.

 

Yes, check for codes. The module has a limp mode were it will run the system by itself. But it could still not be sending pulses to the computer. Running a code test will verify if the computer sees the pulses or not. All you need is a testlight to run the codes.

If it's not seeing the pulses, it could simply be the wire is shorted. The pulse wire is a shielded wire and sometimes the shield shorts to the signal wire.