North American Turbocoupe Organization



Fan switch 83 turbo coupe
Mint tbird Offline
Junior Member
#1
The previous owner hard wired a switch directly from the battery and I would like to put it back to factory specifications. Does anyone know where to locate the correct fan control module
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86thunderchicken Offline
Member
#2
I believe the fan controllers are behind the glove box kind of or behind the dash near the steering column on the lower half
1986 TC 240,000 miles. Walbro 255. Soon to be under the knife for an 87 5 speed swap

1992 Mustang LX 5.0 no mods just a cracked block as of January 2015...
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Jeff K Offline
Administrator
#3
^^^^ +1 Behind the glove box.

The fan control module is a VERY common failure.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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Mint tbird Offline
Junior Member
#4
Where can I find a replacement for sale? I'm looking all over the internet and can't find any
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Jeff K Offline
Administrator
#5
The module isnt anything special..... it is just a high current 40 Amp relay triggered by the coolant temperature switch in the lower intake, along with a trigger to turn the fan on when the AC compressor is energized. If it were me, I would just build my own controller with a 40 A relay to turn on the fan triggered by the temp sensor, and a second small relay triggered by the power feed from the AC compressor clutch coil to turn the fan on with the AC.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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86thunderchicken Offline
Member
#6
Can you show a rough sketch wiring diagram of your idea? lol Smile
1986 TC 240,000 miles. Walbro 255. Soon to be under the knife for an 87 5 speed swap

1992 Mustang LX 5.0 no mods just a cracked block as of January 2015...
Reply

Jeff K Offline
Administrator
#7
So easy you dont need a diagram...... Fan switch on intake grounds when fan should run. Grab key in run power from somewhere, Run to 1 40 A relay coil terminal. Other coil terminal goes to fan switch on intake.18 AWG wire is fine for these runs as current is very low (around 100 mA). One normally open relay terminal goes to battery using 10 AWG wire with a 40 A fuse. Other relay terminal goes to fan + terminal, again using 10 AWG wire.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
Reply

86thunderchicken Offline
Member
#8
Jeff any way you could show a picture of the diagram with what you would do? I’m a very visual learner it helps immensely
1986 TC 240,000 miles. Walbro 255. Soon to be under the knife for an 87 5 speed swap

1992 Mustang LX 5.0 no mods just a cracked block as of January 2015...
Reply

RC Martin Offline
Posting Freak
#9
On my 84 it was the temp switch itself that stopped working, a new one was something like $6 at rockauto. It also comes on very late, at 220F -- this is the OE design.
84 TC - Bright Canyon Red, Rebuilt Motor .040 Over & 3-Angle Valve Job
Gnari FMIC / Recirc Pipe / HKS-SQV BPV, Stinger MBC @ 15psi, RF-E6 Manifold, Remote-Mount TFI, PC1 and Flowed 35# Injectors, Inline Walboro 255HP, Kirban AFPR
Rebuilt Suspension -- KYB & Energy Suspension
http://www.cardomain.com/ride/2289955
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