[ctandc]

Replaced the leaky power steering line. Got it snugged up. Started the truck and let it idle to see if I got the leak fixed. Truck was idling smooth, rolled under the truck on the creeper to snug the clamps I have on a piece of exhaust flex pipe (temp fix until I get it to exhaust shop) mating y-pipe to tail pipe. I'm tightening the bolts on the exhaust clamp and the truck dies. No stumble, no miss, just dies. Roll back out, try to start it up --------turns over no problem no start.

More than a 1/4 tank of gas, but I added a couple of gallons just in case.

No spark at coil. Turns over easily. I haven't messed with any electrical connections. Battery good voltage (hooked up the charger to make sure). Also noticed no fuel pump noise when key turns on.

Intertia switch is not tripped. (Button is not popped up from what I can feel).

Swapped EEC and Fuel relays around. Nothing.

Pulled spout connector - no difference.

Won't give any codes to the code reader - no check engine with KOEO test (But to be honest - the bulb might not be working) - but the code reader worked fine yesterday.

I'm at a loss. Will go at it tomorrow morning. I'm thinking I will start with yanking the ECM and opening it up to see if anything is burned.

 

[ctandc]

Did you check the distributor?

Didn't check the distributor. Looking through the 95 Ford EVTM I can't see how a distributor going bad would also keep the fuel pump from priming with key on. The truck died while running. And after - fuel pump will not prime, no spark from coil.

 

[ctandc]

Okay - so keep in mind I've made no other changes to wiring etc. So since I suddenly lost fire, spark and fuel pump prime and all relays / fuses test fine PLUS the fact my code reader / tester (Which worked perfectly fine hours before all this happened) would not read any codes - I decided to pull the ECM and take a look.

Easy enough to get the 10mm bolt that holds the harness loose. Made room in the fender well to get it unhooked. The harness connector WOULD NOT come loose. Yes the bolt was loosened completely. I got the black connector cover off no problem, but the harness would NOT budge. Ended up having to break the plastic collar piece on the ECM itself.

This allowed me to get the harness off the ECM.

When I moved the ECM I heard a rattle inside the ECM case.

The nut and collar for the 10mm retaining bolt apparently. No swelled capacitors or burned spots on the circuit board I can find anywhere.

I put the ECM back together, plugged it up to the harness. Hooked the battery back up. Turned the key - and the fuel pump primed. Keep in mind - that has not happened AT ALL Since it died while idling yesterday.

So I had removed the ignition module from the inside of the fender to give me more room dealing with the ECM. So I literally laid the ECM and the ignition module on top of the relay box, plugged them up.

Turned the key - fuel pump primed - started it and it fired right up and ran fine.

So I'm trying to dig through the EVTM to get my answer - BUT I can't see how a bad ignition module can keep the fuel pump from priming - at least on initial turn of the key - it primed it without the module plugged up during my testing.

Shopping replacement ECM's now. Likely going used.

Anyone had any random weirdness like this?

 

[ctandc]

Yo,
Sometimes, I have seen corroded terminals on the EEC CONNECTOR.

Honestly that would make sense - it would be convenient for me sure - but that connector was welded on there. I may check Monday with AutoComputerExchange.com

@jermil01 mentioned using them. Will call them Monday morning and see what they have to say.

Thinking about cleaning the connector / pins, rigging something that will keep out weather (I had to break the "hood" on the EEC / ECM around the harness connector. Gasket for firewall is in good shape, hooking everything back up and see how it does. Will wait to see what they say tomorrow about a ECM swap / price.

 

[ctandc]

Well I decided to work on some other stuff. ECM temporarily sitting on fender, would crank it up now and again and it would start fine. Went to start it up - and it wouldn't start. Fuel pump stays on when key goes on, and tail lights lit up?

Unhooked battery, unplugged ECM and it was WARM - as in REALLY warm. Guess I'm looking for a replacement ECU now officially.

 

[ctandc]

@jermil01 @BikerPepe`

Apparently my 95 5.0 MAF ECM is "a hard one" per the guy at AutoComputerExchange.com

$499.

So yeah - guess I'm checking with salvage yards.

 

[ctandc]

Well I called a buddy who ran the ECM number through his exchange. Called a salvage yard out of NC, they have one on the shelf. $75 shipped. She told me if it didn't work, they'd do a free exchange. She did mention they normally only sell ECMs from vehicles that were running when they pulled the drive train.

Maybe I'll get lucky and it's good to go. I am going to hit up one of my local yards tomorrow morning. Apparently they have two 1995 F150s on the lot. Will check both and maybe I'll get lucky.