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Old 12-23-2002, 08:06 AM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
The aux water pump is designed to run after the car is off & the engine temp is HIGH to allow the engine to cool down properly.
The BLUE 2 pin temp sensor at the front of the engine sends info to the A/C controller & the controller engages the aux fans.
The sensor isn't an on/off sensor but is a variable resistor that calls for different things at different temps.
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