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7 Series (E23, E32, E38, E65, E66) General discussion and technical help for all year 7 series cars.

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Old 08-29-2010, 12:04 PM   #1
rollacoach

Name: rollacoach
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95 740i aux fan problem

hello i have a 95 740i and have never seen the aux fan in the front of the radiator run. the car doesnt over heat but i notice on hot days the ac isnt the greatest. which i believe is because the ac head pressure gets too high i dont know where the relay is can someone walk me through where the relay is. thank you
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Old 09-03-2010, 02:40 AM   #2
b57jetmech

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Might not be a relay. take a look at the fusebox in the engine compt. There is a 50 amp fuse buried deep in the covered box that powers the fan! Take a look at it, it might be the source of your trouble.
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Old 09-03-2010, 05:38 PM   #3
rollacoach

Name: rollacoach
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thank you that was it now the fan came on several times and hasnt come on in a while yet the fuse is good. how does that fan function. does it only come on when needed or does it have a sensor that may be bad? if so do you know where that sensor may be or how do i check it?

thank you for all your help
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