My wife is HOT!!!!!!!

[Beamernewbie]

My wife's AC will not start cooling until you roll the windows down and start moving. Once it starts to cool it'll freeze you out. Since we live in FL the AC generally gets used year round. I have searched threads but couldn't find anything relating to this problem. I took it to a local shop for a AC check and they said the Aux fan was bad and wanted 900.00 to repair. They said it had 12v to the fan but wouldn't turn on. So I bought a after market fan on line and installed it myself, and still nothing. I was under the impression that when you start the vehicle and turn the AC to max the aux fan should run and ours never turns on at all. Any suggestions would be greatly appreciated.

[Overboost]

Originally Posted by Beamernewbie

My wife's AC will not start cooling until you roll the windows down and start moving. Once it starts to cool it'll freeze you out. Since we live in FL the AC generally gets used year round. I have searched threads but couldn't find anything relating to this problem. I took it to a local shop for a AC check and they said the Aux fan was bad and wanted 900.00 to repair. They said it had 12v to the fan but wouldn't turn on. So I bought a after market fan on line and installed it myself, and still nothing. I was under the impression that when you start the vehicle and turn the AC to max the aux fan should run and ours never turns on at all. Any suggestions would be greatly appreciated.

Pull the pressure connector at the bottom right near the compressor. The fan should turn on and go to full speed. The aux fan is a common problem. Mine went out before. A lot of fun replacing it as you need to pull the front bumper to replace it.

[upallnight]

Post pic of hot wife and maybe we'll help you.

[Beamernewbie]

Originally Posted by upallnight

Post pic of hot wife and maybe we'll help you.

LOL!

[Beamernewbie]

Originally Posted by Overboost

Pull the pressure connector at the bottom right near the compressor. The fan should turn on and go to full speed. The aux fan is a common problem. Mine went out before. A lot of fun replacing it as you need to pull the front bumper to replace it.

So I pulled the connector and the fan spun up to full speed. So what does that indicate?

[Overboost]

Originally Posted by Beamernewbie

So I pulled the connector and the fan spun up to full speed. So what does that indicate?

It means your fan is working and is not the problem. Mine also had a compressor clutch failure this past month and that is also a common problem. The fan will not turn on if the compressor does not engage so look there and make sure you have a proper refrigerant charge in your system. Do you have any scan tools to see if your HVAC system has any codes?

[Beamernewbie]

Originally Posted by Overboost

It means your fan is working and is not the problem. Mine also had a compressor clutch failure this past month and that is also a common problem. The fan will not turn on if the compressor does not engage so look there and make sure you have a proper refrigerant charge in your system. Do you have any scan tools to see if your HVAC system has any codes?

The only code that shows up is the dreaded P1093 that nobody including the BMW shops seem to be able to properly diagnose. The car runs perfectly engine wise even though the check engine soon light stays on and comes back on soon after I clear it. The compressor is engaging but I noticed when I pulled the pressure switch the compressor disengaged.

[upallnight]

Originally Posted by Beamernewbie

The only code that shows up is the dreaded P1093 that nobody including the BMW shops seem to be able to properly diagnose. The car runs perfectly engine wise even though the check engine soon light stays on and comes back on soon after I clear it. The compressor is engaging but I noticed when I pulled the pressure switch the compressor disengaged.

The 1093 code could be from a dirty IACV (Idle Air Control Valve) some people just try to clean it with MAF or electrical cleaner, I just bought a new IACV instead and the code never came back. When you remove the IACV shake it and it should rattle, no rattles mean it needs cleaning or a new IACV.

[Overboost]

Originally Posted by Beamernewbie

The only code that shows up is the dreaded P1093 that nobody including the BMW shops seem to be able to properly diagnose. The car runs perfectly engine wise even though the check engine soon light stays on and comes back on soon after I clear it. The compressor is engaging but I noticed when I pulled the pressure switch the compressor disengaged.

I was thinking more of INPA as the tool mentioned. You can go straight to IHKA (HVAC) diagnostics and see what the system is unhappy about. Mine told me my compressor clutch had failed.

[Zulu95]

What after market fan did you buy? Some of the aftermarket fans are very poor quality.