ALWJ

First off I'd like to say great website. TONS of useful information and thanks for the help up till now. Here's my situation.
1) No start
2) No spark
3) Plenty of fuel at the rails, but no injector pulse.

I replaced everything in the ignition system, coil, ICM, Distributor, and even the computer with no luck. The coil WILL spark if the computer is unplugged. Any ideas? This is a custom swap into a 66 Bronco so there might be a wiring issue. ANY help, advice, or products you can provide or recommend would be greatly appreciated.

frdmstng1986GT

with no injector pulse i would say you computer is bad.

88blackgt

eec relay maybe? its right by the computer, costs about 12 bucks

ALWJ

Computer is brand new reman and I can hear the EEC relay kick on with the ignition.

redneckstang

is your engine grounded properly? there should be a ground strap from the motor to the firewall or frame

ALWJ

I've got a ground from the block to the frame, from frame to body, and from body to negative on the battery.

FiveLiterRiceEater

ok.

you have a new eec. and you can hear the relay click. first, the relay is clicking, doesnt necessarly mean its good. but assuming it is good you need to check the wire that goes from the eec relay to the injector harness.


no spark, are you using a stock distributor? theres a tfi module that will cause a no spark problem sometimes. also you might want to check the wiring inside of the distributor cap to make sure none of them are open or shorted.

the coil sparks if the eec is unplugged? kind of sounds like the you may have a short somewhere in the primary ignition circuit as well. i dont know so much on fords but sometimes on gms from the same era, youcould actually short components in the computer like that, and end up having to buy a new computer.