2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Duel temp thermo sensor?

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Old Mar 19, 2009 | 01:25 AM
  #1  
Rx7TyreBurna's Avatar
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Duel temp thermo sensor?

Is there such a thing?

I have the taurus 2 speed e-fan, on it's way. So, I would like one temp for a little cooling, and if I am on it hard, it will throw it into high.

Also, where should i plug the thermo sensor? Or, where should i bolt it in?
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Old Mar 19, 2009 | 06:16 AM
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I've never seen such a trigger before...usually a two speed fan has two triggers, one for each speed.
I have the same fan (what a surprise, everybody has a Taurus fan) and found that low speed is all that's necessary but then again, I haven't got AC.

As for the sensor (trigger) location...most here will recommend drilling/tapping the waterpump housing below the thermostat.
There is however an easier alternative- especially if you haven't got AC and PS installed.
At the bottom front driver's side of the engine is a hex plug (not the drain plug at the motor mount...forward of that) that was used for a block heater in cold climate cars.

I was told NOT to use this location by folks on this forum but I decided to test it anyway.
For a few weeks I ran two water temp gauges and the one in the block heater location tracked the stock location gauge exactly.
So I installed my fan sensor there and it's worked perfectly for over a year now.

I wired a switch between the relay and trigger so the fan can be disabled if desired.
No need for the fan at all on the highway.
I haven't yet found a really good sensor yet, when I do the switch will be removed.
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Old Mar 21, 2009 | 03:40 AM
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Cool. Thanks!

Any links to the drill / tap of the waterpump? I am not too worried about drilling / tapping.
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