Question about 1986 Pontiac Fiero

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The radiator fan dosent run. i changed the relay

The radiator fan dosent run. i changed the relay still dosnt run but if i hot wire it directly off the bat it works great. Is there a temp sensor somewhere and if so where is it? Thanks

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Does it not run at all? Or does it only run after the fiero gets really hot (like sitting in traffic on a 90 degree day)?


But a low-temp fan switch (sensor), which causes the fan to turn on at a much more reasonable level. I think the stock switch doesn't turn on till it reaches 235 degrees or something.

The switch/sensor is located near the top of the engine (on passenger side end of engine area, opposite end of the throttle body).

Buy it here (or other places have them too)
http://www.rodneydickman.com/n20.html

You should be able to see where it installs by matching up the new part with the old, pretty easy operation. A little coolant might squirt out, so only do this when the engine is cold.

Hope this cures it

Posted on May 28, 2010

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