My 94 F-150 4x4 351W E4OD with EFI keeps dying randomly. It dies while driving. Thought heat was the issue but it would not start after 3 hours of being off.

No high heat on my gauge. But there was a lot of heat under the hood at least one of the times it died.

Voltage seems fine.

It usually starts again if I wait a couple minutes.

Thoughts?

 

This is the 67-72 forum. But I would check my fluid levels (how old is the oil ?) and have the anti-freeze checked for the correct strength.

 

Check the TFI (Thick Film Ignition) module on the side of the distributor.

 

It wouldn't hurt to replace the fuel filter(s).

 

Admin, please feel free to move this to the 90's trucks.

As for your suggestions. Good ideas. The filter does come to mind. Will have to see where they put it. Provided there is only one.

Miss my 72' 360. No damn computers! Just linkages & vacuum lines. Why did we ever leave mechanical fuel pumps, btw? My 94 has 2 very expensive pumps in the tanks. My 360 had 1 mechanical pump. On the engine was a great place. Way easier to work on.

Anyhow, I'll check those asap. Thank you.

 

2X on this

 

What should I be looking for regarding the TFI?

 

Ford had a boat load of bad TFI's. I had on on a small mercury Lynx in 92 that just stopped working as I was going thru an intersection. I thought it was a bad coil-wrong! The parts guy had a new TFI on the counter when I went back. He said " I knew that you would be back, we've had a dozen of these go out this week".

 

:O

Way to go Ford. Making us look bad in front of those Dodge guys.

I'll go get one. ... a TFI. Not a Dodge. :P

 

The parts store said they have no listing for a TFI. Their site asked if I meant an ICM Ignition Control Module.

Might that be what they are calling it now?

 

Yes, they are. Just did a search and got another entry from this great page!
ICM/TFI.

 

Pretty good responses out of the wrong forum! A thread move request has been made.

 

Done. Moved you over to the 351 forum to get help.

Stewart

 

2nd attempt to upload what I found.

Nothing. Bare spot where the TPI/ICM should be.

 

Try the fender, right where the fan and prevailing air currents under the hood would direct the hottest air. Just follow wires from the dizzy. Mine was on the dizzy. Only failed once, no restart.