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Old Aug 25, 2018 | 01:09 PM
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Engine dies randomly.

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?
 
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Old Aug 26, 2018 | 03:03 AM
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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.
 
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Old Aug 26, 2018 | 10:52 AM
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Check the TFI (Thick Film Ignition) module on the side of the distributor.
 
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Old Aug 26, 2018 | 01:16 PM
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It wouldn't hurt to replace the fuel filter(s).
 
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Old Aug 26, 2018 | 02:13 PM
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Whoops. Posted to the Gen 5 (67-72) earlier about my 72. Forgot to change it to the Gen8/9.

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.
 
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Old Aug 28, 2018 | 12:23 AM
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Originally Posted by ultraranger
Check the TFI (Thick Film Ignition) module on the side of the distributor.

2X on this
 
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Old Aug 28, 2018 | 12:56 AM
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TFI

What should I be looking for regarding the TFI?
 
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Old Aug 29, 2018 | 03:07 AM
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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".
 
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Old Aug 29, 2018 | 11:15 AM
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...

: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
 
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Old Aug 29, 2018 | 03:34 PM
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TFI or ICM?

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?
 
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Old Aug 29, 2018 | 03:37 PM
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...

Yes, they are. Just did a search and got another entry from this great page!
ICM/TFI.
 
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Old Aug 29, 2018 | 03:51 PM
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Pretty good responses out of the wrong forum! A thread move request has been made.
 
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Old Aug 29, 2018 | 05:04 PM
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Originally Posted by hjartland
Admin, please feel free to move this to the 90's trucks.
Originally Posted by 85e150six4mtod
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
 

Last edited by Stewart_H; Aug 29, 2018 at 05:06 PM.
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Old Aug 29, 2018 | 07:46 PM
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Nothing

2nd attempt to upload what I found.

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

 
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Old Aug 29, 2018 | 07:49 PM
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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.
 
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