Question about 1987 Chevrolet Corvette
GM has problem on cooling fan during the late 80.
The solution is not swapping sensor. It's using an universal fan relay system like the one picture below.
Place the silver problem next to the radiator and set the correct temperature (195-215F) your want the fan to come on.
Just think of it as an insurance when the electrical system fail.
To answer your question.
The 3 sensors are at
1)single wire TAB sensor (near the thermostat cap)
2)single wire sensor with clip (on the block)
3)AC fan switch that not related to cooling system unless A/C is switched on.
Posted on Jul 30, 2010
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Posted on Jan 02, 2017
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