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Old 01-09-2001, 05:49 PM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
On different cars some of the things listed are true & others aren't. On the 1979 car there is a small temp switch in the air intake that supplies power to the pump. There have been 2 different temp ratings for this switch. Replacement pumps are inductive instead of direct shaft drive. Most newer pumps aren't repairable & water doesn't invade the motor, due to inductive drive. I am surmising that you have a weak heater, esp at idle!
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