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Old 02-03-2016, 10:22 PM   #39 (permalink)
Enki
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Quote:
Originally Posted by bob View Post
But, the biggest is when the front windshield defroster is on with the fan switch engaged then it's 1,500 rpm until almost stopped when it drops to 800 rpm.
Most vehicles kick on the AC compressor for defrost; not entirely sure why other than possibly engine load (more heat faster) and temp control of the defrosting air.
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