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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Cooling fan on max speed when car is started



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      11-08-2012, 09:56 AM   #1
svtfast
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Cooling fan on max speed when car is started

The weather is changing here. The low this morning was 41 degrees.
This should not matter becausein Feb of this year I was driving the car in Germany when it was -15.

The fan will turn on as soon as I start the motor and it will remain on while driving. This just started this morning but I aleardy called my SA.

What could be the issue?
Thermostat (no way, motor was cold)
Relay?
some electical component?
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      11-08-2012, 10:41 AM   #2
zanelefko
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Do you have jb4? Could accidently be on max cool mode
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      11-08-2012, 11:09 AM   #3
07bmw335iguy
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Sounds like your water pump went out but could also be this ^^
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      11-08-2012, 11:23 AM   #4
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Quote:
Originally Posted by 07bmw335iguy
Sounds like your water pump went out but could also be this ^^
Trying to narrow down the easy stuff before anything major, if not jb4, like he said waterpump
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      11-08-2012, 11:44 AM   #5
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could be something minor like a coolant sensor
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