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Old 08-12-2011, 05:35 PM
JohnM. JohnM. is offline
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Join Date: Dec 2007
Location: NorCal
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The diesels may be completely different in this regard, but the front aux fans don't turn on until 105C on the gassers. However, you are correct that with the AC on, the fans should be spinning at low speed. I'll let others chime in on the culprits of that issue.

But I wouldn't worry about 100C on a new car that you have no personal history with, and have no idea how old the cooling system is, overall tune, etc.
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