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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 06-18-2004, 11:06 PM   #1 (permalink)
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I have an a/c problem. the a/c is blowin warm. I am trying to eliminate any problems before i spend the 100 on getting it charged, as it was said to be working before i bought it. I have blocked coolant flow into the heater core, verified both fans are working, and am pretty sure the compressor is functioning fine. Does anyone know if there are any other common bugs that might cause it to blow warm. I did notice that there are a couple of temp sensors on the a/c, heater system; will they effect if they the system blows cold?
thanks in advance!

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Old 06-25-2004, 04:08 PM   #2 (permalink)
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The first step to diagnsing your a/c is to make sure there is freon in it. There is a window on the receiver/dryer where you can see the freon in the system. If the freon is low it will cause it to be warm.
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Old 06-25-2004, 05:58 PM   #3 (permalink)
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Unless you have a break in an a/c line... or every a/c line for that matter... the only thing I know that would make it blow hot would either be no freon... or your temperature valve is stuck to the HOT possition...
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