A.C. CONDENSER

  • Tiny
  • Mpetruescu
  • 1998 BMW 323
  • 6 CYL
  • 2WD
  • manual
  • 130,000 miles

Im replace my condenser for my car, the old one has a hole in it. I was wondering when I put the vacuum pump how much vacuum should I have(also with the engine off?). Is there something I need to be aware of or something else that I need to do.

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Friday, August 12th, 2011 AT 10:45 PM

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  • Tiny
  • hmac300
  • Expert
  • 43,623 posts

You really should have a pro do this, but if your condensor has a hole in it then you should also replace the reciever/drier, pump it down to 29" for 15 minutes, do a freon sweep then pump it down again for another 15 minutes. Don't forget to add the correct oil to replace the stuff that is gone from the old condensor.

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Friday, August 12th, 2011 AT 11:12 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,039 posts

Just so you understand what it is that you are doing when you are running a vacuum on it. Water will boil at a lower temp when atmospheric pressure is lowered. Water will boil at room temp when held at 29" of vacuum so it will boil all the moisture out of the system.

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Friday, August 12th, 2011 AT 11:25 PM
  • Tiny
  • Mpetruescu
  • Member

Yea i've been looking over it, your right ill just replace the condenser and drier and have the pros fill her up.

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Sunday, August 14th, 2011 AT 12:41 AM

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