Question about 2000 Volkswagen Cabrio

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Air conditioner loosing 12 volt power to the clutch

My air conditioner come on for about five minutes, then shut off. sometimes it comes back on. It seems and must be an electric switch or relay failure or bad connection. The freon is full, we recovered, vacummed and recharged. We changed the A/C relay, binary switch and new fan control module. It still comes on for a few minutes then kick out the clutch. It is loosing 12volt somwhere. Any suggestions???

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So you changed the freon, recovered, vac., recharged so that's good.
Then you went into the electronics and changed the a/c relay, binary switch, and put a new fan control module in.

Is it possible that it is too full of freon even though you had the right amount put in?

Because there is probably an upper limit to the pressure that the a/c refrigerant will be allowed to go up to.

Ask your a/c technician what the upper and lower limits were for pressure in your system.

There could be a metal flake (flakes from the compressor wear)restriction in the orifice tube that makes the pressure go too high on the high end so it shuts off for safety reasons after 5 minutes.

I also noticed that you might have a convertible. This would be a little bit tougher on the a/c system since a rag top doesn't insulate as well as a metal roofed car with the windows rolled up.

Good luck on fixing this one.

Posted on Jul 08, 2010

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