E46Fanatics - View Single Post - 2003 325xi leaking coolant
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Old 11-29-2012, 10:33 AM   #18
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Join Date: Apr 2011
Location: Flagstaff, AZ
Posts: 229
My Ride: 2003 330Xi
The temp gauge goes from normal to overheated in a matter of minutes. We just dealt with one on a trip from Chicago. It would stick closed intermently. All of a sudden the temp light would go on and the needle would be pegged. Let it cool down and it would work fine for hours. As time went on it would happen more and more often. When I found an independent he changed it and you could see marks on the thermostat where it had been sticking. It rarely got hot when driving because of the air flow at higher speeds. Sitting at idle it would happen almost every time.
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