Quote:
Originally Posted by thom4782
When the A/C is on, the low speed fans run continuously.
When the A/C is off, the low speed fans start running at a certain coolant temperature. They may be enough to jeep the coolant temperature from raising much further depending on outside temperature and speed.
If they don't, then the high speed fans will start running at a somewhat higher coolant temperature, Another forum member or a search may say what those trigger temperatures are.
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I have an issue with my right side fan not running at low speed. This results in in a +5 to +10 coolant temperature. When I turn the A/C on, both fans function and the temp drops to normal. I was under the impression that the A/C turned the fans onto high speed? I have a '97