First thing of course is to check all the fuses and fusible links in the underhood power center. If all are ok, then test for power to the EEC relay.It is the main power supply for the ECM.Check those and get back to me

Answered by 2CarPros Jack (expert)
12,033 answers provided

I checked all fuse links. I did a voltage test on the battery-12.77, eec relay coil side-12.45, side to be switched-3.46, fuel pump relay coil side-3.02, side to be switched 3.43. There is not enough voltage at the fuel pump relay to activate coil. If I put jumper in relay plug to fuel pumps the 3.43 voltage is not enough to run fuel pumps. I can run jumper from battery to same plug and fuel pumps will run but won't crank because no power to injectors.

Response from fordman
1 question asked

Just a thought but isn't there a safety cutoff switch? This gets tripped sometimes when jarred or tipped a bit. Have you looked to see if it needs to be reset?

Answered by Bruce Hunt (expert)
3,803 answers provided

Yes the inertia switch is working.

Response from fordman
1 question asked