Fans 1986
Thread Starter
Melting Slicks
Joined: Nov 2007
Posts: 2,830
Likes: 147
From: Gainesville FL
Fans 1986
I have an 1986 Vert with a fan forward of the radiator and a bigger fan aft of the radiator. I have a chip that turns on the Aft fan at 160 but I've never seen the FWD fan come one. What controls that?
Thanks,
Thanks,
Team Owner
Joined: Sep 2003
Posts: 25,394
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A switch in the cylinder head wired through a separate relay. Do you have the FSM (Factory Service Manual) for the car?
Zen Vet Master Level VII
Joined: Mar 2016
Posts: 5,218
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From: Southlake, TX
Your auxiliary fan (the one in front of the radiator) is going to come on at a much higher temp... usually about 238.
You can get a new temperature sensor switch and swap them for a "lower" sensor. You can find ones that will come on at 215ish.
You can get a new temperature sensor switch and swap them for a "lower" sensor. You can find ones that will come on at 215ish.
Team Owner
Joined: Sep 2001
Posts: 62,160
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
In the drivers side cylinder head, just below the alternator. It comes on at 238F in 86.
If your main comes on at 160 then you will burn up your fan motor. This one is ECM controlled.
If your main comes on at 160 then you will burn up your fan motor. This one is ECM controlled.
Thread Starter
Melting Slicks
Joined: Nov 2007
Posts: 2,830
Likes: 147
From: Gainesville FL
Drifting
Joined: Nov 2015
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Finalist 2020 C4 of the Year - Unmodified
Takes the correct PDF reader to do so, though.
Safety Car
Joined: Sep 2004
Posts: 3,953
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From: Mission Viejo CA
Why did you choose 160? Your thermostat will hardly be opening at that temperature! Your main fan will be running all the time. Your fan should only come on when the engine temperature exceeds the thermostat temperature.
Your engine is at war with itself. The main fan is trying to keep the engine very cool, and the thermostat is closing in an attempt to get the engine up to the proper temperature!
At what temp is your engine running? It's probably running so cool that the front fan will never come on!
Your engine is at war with itself. The main fan is trying to keep the engine very cool, and the thermostat is closing in an attempt to get the engine up to the proper temperature!
At what temp is your engine running? It's probably running so cool that the front fan will never come on!
Thread Starter
Melting Slicks
Joined: Nov 2007
Posts: 2,830
Likes: 147
From: Gainesville FL
Why did you choose 160? Your thermostat will hardly be opening at that temperature! Your main fan will be running all the time. Your fan should only come on when the engine temperature exceeds the thermostat temperature.
Your engine is at war with itself. The main fan is trying to keep the engine very cool, and the thermostat is closing in an attempt to get the engine up to the proper temperature!
At what temp is your engine running? It's probably running so cool that the front fan will never come on!
Your engine is at war with itself. The main fan is trying to keep the engine very cool, and the thermostat is closing in an attempt to get the engine up to the proper temperature!
At what temp is your engine running? It's probably running so cool that the front fan will never come on!
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Thread Starter
Melting Slicks
Joined: Nov 2007
Posts: 2,830
Likes: 147
From: Gainesville FL
