Fox Temps on my tfi module relocated

[Mindseye007]

Took my 1991 5.0 coupe for a nice ride to today it was so sunny and beautiful. when I got back I decided to check the TFI temp with a temp gun now that is is relocated.
The first pic on the left is where the dummy TFI is mounted where the stock TFI used to go on the distributor and it read 157.6 F .
2nd pic the temp of where the Stock TFI is mounted in its new location, it read 95.4 F . you can see more in the 3rd pic how I mounted it. so sweet, I am using the McCully Racing Mk3 TFI Relocation AND Extension kit https://www.mccullyracingmotors.com/

 

[Noobz347]

What I need is a coffee percolator that fits into the OEM TFI location. It's gotta [look] stock tho.

 

[CAMTWO1070]

Took my 1991 5.0 coupe for a nice ride to today it was so sunny and beautiful. when I got back I decided to check the TFI temp with a temp gun now that is is relocated.
The first pic on the left is where the dummy TFI is mounted where the stock TFI used to go on the distributor and it read 157.6 F .
2nd pic the temp of where the Stock TFI is mounted in its new location, it read 95.4 F . you can see more in the 3rd pic how I mounted it. so sweet, I am using the McCully Racing Mk3 TFI Relocation AND Extension kit https://www.mccullyracingmotors.com/

Pretty snazzy....I had a buddy that bought one of those setups to stop the TFI modules from burning out and didnt realize that if the TFI module gets hot theres a reason other than heat behind it and just pushed the problem up into the ECU as the reasons behind the TFI module failing is a myth no matter the lawsuits as its real reason for failure was Flyback and the fix was adding a starter solenoid that contained a diode...........





If your diode doesnt have a silver foil sticker that says "Diode Supressed" it doesnt contain a diode.......



I just use bubblewrap with a mylar layer to keep the heat from rising up and heatsoaking the TFI module even though with my full ball bearing distributor and 180 degree thermostat my TFI module has no issues with getting hot but I still figured Id give it some extra insurance seeings I removed the clutchfan and added an electric one....





Another thing youll be surprised about is how the TFI module cooling plate is backed up to plastic so the actual cooling is quite moot due to the cooling gel that encapsulates the IC's...............

The TFI mounting plate popped off when the module hit the ground but you can see where the plate mainly grounds the IC's inside as most of the heat transferred into the module comes from the heat of the engine up into the distributor..........




Most vehicles that have TFI module problems get them from either advancing the timing past the 10* btdc or from the Halls effect trigger misfiring from the lower bushing in the distributor body going bad or the 22kohm resistor shorting to "OPEN" and feeding the IDM circuit on Pin #4 with raw unfilered power also the starter solenoid lacking a diode.....

View attachment 722636

Food for thought in case the problems start up again but something tells me the car with the issues isnt well driven like mine which is driven every day...............



Good Luck

 

[Mindseye007]

Pretty snazzy....I had a buddy that bought one of those setups to stop the TFI modules from burning out and didnt realize that if the TFI module gets hot theres a reason other than heat behind it and just pushed the problem up into the ECU as the reasons behind the TFI module failing is a myth no matter the lawsuits as its real reason for failure was Flyback and the fix was adding a starter solenoid that contained a diode...........





If your diode doesnt have a silver foil sticker that says "Diode Supressed" it doesnt contain a diode.......



I just use bubblewrap with a mylar layer to keep the heat from rising up and heatsoaking the TFI module even though with my full ball bearing distributor and 180 degree thermostat my TFI module has no issues with getting hot but I still figured Id give it some extra insurance seeings I removed the clutchfan and added an electric one....





Another thing youll be surprised about is how the TFI module cooling plate is backed up to plastic so the actual cooling is quite moot due to the cooling gel that encapsulates the IC's...............

The TFI mounting plate popped off when the module hit the ground but you can see where the plate mainly grounds the IC's inside as most of the heat transferred into the module comes from the heat of the engine up into the distributor..........




Most vehicles that have TFI module problems get them from either advancing the timing past the 10* btdc or from the Halls effect trigger misfiring from the lower bushing in the distributor body going bad or the 22kohm resistor shorting to "OPEN" and feeding the IDM circuit on Pin #4 with raw unfilered power also the starter solenoid lacking a diode.....

View attachment 722636

Food for thought in case the problems start up again but something tells me the car with the issues isnt well driven like mine which is driven every day...............



Good Luck

Pretty cool thanks for that info.