Water Pump or T-Stat?? - Pontiac GTO Forum
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post #1 of 2 (permalink) Old 01-08-2015, 11:09 PM Thread Starter
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Water Pump or T-Stat??

I recently replaced both serpentine belts on my 05 M6. Prior to replacing is had a hell of a squeel. So two days later I noticed the temp on my guage climb a couple notches on the guage and instantly drop back down to normal operating temp (I'm assuming the t-stat was stuck or the fan kicked in). This happened again yesterday, after following a hard freeze over night (15 Deg). The vehicle had been running for a good 30 min on the freeway prior to the temp starting to climb. No coolant leaking. No more squeeling since I changed the belts. I'm thinking T-Stat is sticking, however that T-Stat was replaced last year so its not very old. Guess it could be defective....thoughts??

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post #2 of 2 (permalink) Old 01-09-2015, 07:53 AM
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If the water pump is leaking who will see antifreeze underneath the car and around the pump itself.

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