2003 BMW 325 A/C Will not blow cold and overheats in idle

Tiny
LONGROD
  • MEMBER
  • 2003 BMW 325
  • 6 CYL
  • 2WD
  • MANUAL
  • 80,000 MILES
Please help I have replaced the coolant reservoir because it cracked and leaked and the end stage because the blower wouldn't work. Now the a/c will not work the fan does not come on there is no power to the fan or the coolant temp sensor below the fan connector and there are no leaks. The fuses all seem to be fine. The a/c is charged. I think the a/c is tied into the cooling system so if anyone has any ideas please help.
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Monday, August 24th, 2009 AT 1:49 PM

4 Replies

Tiny
DR. HAGERTY
  • MEMBER
When did the A/C problem first start? You replaced the expansion tank and the final stage, correct? Now there is no power to the fan, which fan? The fuses can be blown without a visual cue, check them all with a test light.
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Tuesday, August 25th, 2009 AT 8:41 AM
Tiny
LONGROD
  • MEMBER
I already checked the fuses with a test light this is the first thing I always do. And the a/c worked until the blower went out. The fan I speak of is the e fan for the a/c in front of the radiator
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Tuesday, August 25th, 2009 AT 9:47 AM
Tiny
LONGROD
  • MEMBER
I found the problem. There was corroded wires in engine compartment that caused there to be no power to the compressor, the temp sensor and the E-fan. Repaired wire got the A/C to work and found the fan to be faulty. By faulty I mean it stays on all the time. The Fan has a relay that is built in to the assy. That regulates it so unfortunately the whole thing needs to be replace it is not sold separately. I just thought I would post this so if anyone else has this problem they would know. This problem does not through a code so hope it helps. It is the wires that go to F-37. And did not blow the 50 amp fuse just simply did not let power go to the necessary parts. I do not know if this had anything to do with the fan going bad I think the fan was just a fluke.
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Tuesday, August 25th, 2009 AT 4:21 PM
Tiny
DR. HAGERTY
  • MEMBER
Thanks for reposting
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Tuesday, August 25th, 2009 AT 10:38 PM

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