5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Electrical Problem?? Please HELP!

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Old Sep 4, 2006 | 12:01 PM
  #11  
95Saphire5.0's Avatar
95Saphire5.0
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Default RE: Electrical Problem?? Please HELP!

ORIGINAL: leadfootdriver


ORIGINAL: 95Saphire5.0

ORIGINAL: leadfootdriver

The TFI modules don't last forever. I had 1 go on my Tempo. While I was driving, the motor just cut out like I turned the key off. Sometimes they go slowly and put out a weak orange spark. The local parts store around here tests them for nothing. Maybe the 1 around you does too. Check it out. Put some dielectric grease on it when you reassemble they new/old one to dissapate the heat.

BTW, you'll need to grind down the proper 1/4 drive deep socket to fit in there, or you can get the tool to remove it.
Is the TFI the same as the "ICM" located on the fender apron?
I don't see anything mounted to the distributor

It might be different with the later 5.0's. On mine it's mounted to the dist. Here's a cool short on how to replace it. There's a pic with the TFI installed at the bottom. http://www.turbotbird.com/techinfo/TFI-PIP/TFI-PIP.htm I did a search on Ford TFI's, and there was a class action suit against Ford because the TFI's were dying all over the place.

From what little I've read, they seem to act up with heat. 'Could be your problem. But like I said earlier, mine died instantly, so you're lucky you haven't been stranded like I was. Here's another quick link. http://autorepair.about.com/library/a/1h/bl926h.htm
Thanks... It is remote mounted on mine. It seems their have been a bunch of different issues related to this going bad. I can pick one up for around $60, so I will get one and see if it makes a difference.
Old Sep 4, 2006 | 12:22 PM
  #12  
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Fox
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Default RE: Electrical Problem?? Please HELP!

You might also consider cleaning the MAF sensor elements with electronic cleaner.
Old Sep 4, 2006 | 05:05 PM
  #13  
95Saphire5.0's Avatar
95Saphire5.0
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Default RE: Electrical Problem?? Please HELP!

ORIGINAL: 95Saphire5.0

ORIGINAL: leadfootdriver


ORIGINAL: 95Saphire5.0

ORIGINAL: leadfootdriver

The TFI modules don't last forever. I had 1 go on my Tempo. While I was driving, the motor just cut out like I turned the key off. Sometimes they go slowly and put out a weak orange spark. The local parts store around here tests them for nothing. Maybe the 1 around you does too. Check it out. Put some dielectric grease on it when you reassemble they new/old one to dissapate the heat.

BTW, you'll need to grind down the proper 1/4 drive deep socket to fit in there, or you can get the tool to remove it.
Is the TFI the same as the "ICM" located on the fender apron?
I don't see anything mounted to the distributor

It might be different with the later 5.0's. On mine it's mounted to the dist. Here's a cool short on how to replace it. There's a pic with the TFI installed at the bottom. http://www.turbotbird.com/techinfo/TFI-PIP/TFI-PIP.htm I did a search on Ford TFI's, and there was a class action suit against Ford because the TFI's were dying all over the place.

From what little I've read, they seem to act up with heat. 'Could be your problem. But like I said earlier, mine died instantly, so you're lucky you haven't been stranded like I was. Here's another quick link. http://autorepair.about.com/library/a/1h/bl926h.htm
Thanks... It is remote mounted on mine. It seems their have been a bunch of different issues related to this going bad. I can pick one up for around $60, so I will get one and see if it makes a difference.
Well, I installed a new ICM, and it made no difference... I will keep my fingers crossed that someone has a solution, and continue trying any suggestions.
Old Sep 4, 2006 | 05:29 PM
  #14  
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leadfootdriver
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Default RE: Electrical Problem?? Please HELP!

Sorry to hear that. There's still the "Stator" in the distributor left. I had 1 go bad in my Grand Am. It was a 12 dollar part, and I beat my brains out over it.
Old Sep 4, 2006 | 10:42 PM
  #15  
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Default RE: Electrical Problem?? Please HELP!

ORIGINAL: leadfootdriver

Sorry to hear that. There's still the "Stator" in the distributor left. I had 1 go bad in my Grand Am. It was a 12 dollar part, and I beat my brains out over it.
Well, that was one of the possibilities that I have not tried. I guess I'll have to try it out.
Old Sep 5, 2006 | 12:35 AM
  #16  
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Default RE: Electrical Problem?? Please HELP!

First off does it drop rpms at cruise as well as idle because if it does then it isnt your iac. If the stator doesnt fix it you need to check fuel pressure because the pump might be getting heat soaked and losing pressure. If you have questions test parts just ask because it gets pricey just popping parts in.
Old Sep 5, 2006 | 08:30 AM
  #17  
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95Saphire5.0
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Default RE: Electrical Problem?? Please HELP!

ORIGINAL: mpswirl

First off does it drop rpms at cruise as well as idle because if it does then it isnt your iac. If the stator doesnt fix it you need to check fuel pressure because the pump might be getting heat soaked and losing pressure. If you have questions test parts just ask because it gets pricey just popping parts in.
Yes, it is actually more noticeable at cruise. Is there a simple way to test the pump?
Old Sep 6, 2006 | 11:23 PM
  #18  
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Default RE: Electrical Problem?? Please HELP!

You have to connect a fuel pressure guage to it and drive it.
Old Sep 20, 2006 | 12:31 AM
  #19  
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95Saphire5.0
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Default RE: Electrical Problem?? Please HELP!

ORIGINAL: 95Saphire5.0

ORIGINAL: leadfootdriver

Sorry to hear that. There's still the "Stator" in the distributor left. I had 1 go bad in my Grand Am. It was a 12 dollar part, and I beat my brains out over it.
Well, that was one of the possibilities that I have not tried. I guess I'll have to try it out.
Stator was replaced 4 days ago, and the problem is gone!! $20 part, 2 hours to tear into the distributor, and it's running better then ever. Thanks!
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