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      08-16-2015, 08:29 PM   #1
highbrowed
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Drives: 135i 6MT w/ N54 Delete
Join Date: Jul 2014
Location: South Florida

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Radiator fan running on full blast all the time

Other morning I drove to work (3 miles) and it was 69 degrees, pretty cool. When I parked, the radiator fan was running on full blast. I stopped and restarted the car, and the fan was still running.

I have since discovered that when I start the car up cold, the fan won't come on, but it will come on after a few minutes of driving, regardless if the AC is on or not.

Anyone experienced this symptom? I'm going to be replacing both the water pump and thermostat, but wanted to see if someone has seen this issue before.
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