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radiator cooling fan

Hi,

New to the forum but I have a 2002 325i and I have noticed that my radiaotor cooling fan does not come on. I believe that is electrical but just do not know. I have not let the car overheat bur I know that it well. Does anyone have any ideas what it may be?

Old 03-03-2007, 09:35 AM
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If you don't get a reply from a member, Jeron will respond and knows his stuff. I am a new owner as well and have not a clue on your particular challenge
Old 03-03-2007, 11:06 AM
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Is the fan in front of the radiator or the back(engine side)? Do you have a manual or automatic tranny?

The front fan is the secondary fan and it should come on with the ac and it will also come on if the primary fan can't keep up.

The back fan is the primary fan. On some models it is mechanical ans on some it is electric. If it is mechanical it should be turning if the engine is on. I fit it is electric it probably will not come on until it reaches operating temp.
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Old 03-05-2007, 07:46 AM
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I am speaking of the front fan. I have an automatic tranny. what I am finding is that my temperature is going up in my engine and the cooling fan is not turning on. I am fine at highway speeds but if I am idleing I have the potential to cause some problems that I do not want. I have parked my car until I can solve the problem
Old 03-05-2007, 08:02 AM
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Does the fan come on when you turn on the AC compressor? It should.

Does your temperature move higher than TDC? It never should get higher then 12-oclock, on an E46, or you have a problem.

The front fan is only supplemental so if you are overheating at idle quickly then you may have more than one problem.
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Old 03-05-2007, 08:06 AM
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What does the temp say in your instrument cluster if it says -40 then you have lost your outside temp sensor. this happens often. and in that case the fan wont come on

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Old 03-07-2007, 09:40 AM
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