Noobs: TFI Module Advice

nito88stang

Founding Member
May 23, 2002
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Fullerton, California
If you own a 5.0 mustang long enough your TFI module will fail sooner or later and leave you stranded on the side of the road. So here are a few things to make your life easier.

Carry a spare TFI module in your glovebox or toolbox (get one from a junkyard or get a new one if u can swing the cash)

Replace the stock bolts before hand. You have to use a 7/32 deep socket to even get to them, and unless you always have one with you at all times they are in there for good. What i suggest is to take those out and put in a bolt that can be removed with a screwdriver to make it easier on you while you try to replace on the side of the road.

Make sure to use heatsink jelly when you put the tfi module on or it will fry on you. YOu can put one without just to get your butt home, but do put the heatsink on when you get a chance.

:spot:
 
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nito88stang said:
Replace the stock bolts before hand. You have to use a 7/32 deep socket to even get to them, and unless you always have one with you at all times they are in there for good. What i suggest is to take those out and put in a bolt that can be removed with a screwdriver to make it easier on you while you try to replace on the side of the road. :spot:


Parts stores carry what is called a "tfi module removal tool"; much easier to remove module with one of those. They cost $5 and are no bigger than a roll of film; I keep a spare tfi module and removal tool in my glovebox after I had one fail on my old '89; luckily it only left me stranded at home.
 
what is heatsink jelly? is that like dielectrical grease? i thought one was to use the latter on the mating surfaces.

this is a good idea, and there are write ups all over the internet on how to have spare ones or even extra ones (think: ol'd british cars that required one fuel pump but had 2 for when one failed. LOL).