[Grizzlyalbert]

HELP!
I can't find a reliable radiator fan switch, I've bought over a half dozen and none switch on or off at the specified temperature,
I bypassed the switch so the fan runs all the time and this works but no telling what damage its causing, not mention the annoying howl.
If anyone knows of a product or vendor that works, please let me know..
I think an automobile sensor would work but I can't find a cross reference.

 

[rainmanx]

Have you tested the switches in hot water to determine they are bad? The switches have small range of accuracy, but they should work before the vehicle would overheat.