Quote:
Originally Posted by shertex
Interesting question. I've been wondering about the aux water pump. Sometimes at idle I have good heat, sometimes not. So I'm suspecting it's on its way out.
What would be the connection between my temp calibration issue and the aux water pump?
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I believe that the aux water pump affects the amount of coolant entering the heater core at idle to stabilize the overall warmth of the car when it is cold outside. I know that my pump is disconnected at this time and my heat at idle is not as hot as when I am driving.