1999 Volkswagen Beetle Replacing A/C Compressor

RSONTAG

MEMBER
1999 VOLKSWAGEN BEETLE
4 CYL
2WD
MANUAL
127,000 MILES

My compressor recently stopped working. I Replaced the compressor, dryer and expansion valve as recommended by my local Auto Parts distributor. After removing the parts, I flushed and blew out system. I pulled a 2 hr vaccum after installing the new parts. When I stated charging the system, before getting a full 16oz. Can of R134A in the pressure went up to 80+ lbs. Did I miss something. Is there an orifice on it somewhere that I need to change?

4 Replies

KHLOW2008

MECHANIC
41,815 POSTS

Hi Rsontag,

Did you start the car and turn the AC on while charging?

80 psi is at low side? What is the pressure of high side?

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Friday, July 18th, 2008 AT 12:54 AM

BRAUNS BUTCHER BLOCK

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7 POSTS

What did you find out about this

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Sunday, June 17th, 2012 AT 8:31 PM

VWSCOTT

MEMBER
66 POSTS

Expansion valve at the firewall. If the compressor wore out it's probably full of debris. Also if you charge by small cans the pressure can get high if you turn the can over, you're putting it in as a liquid. You should only shake the can in an upright possition. While the car is running.

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Saturday, July 7th, 2012 AT 12:59 AM

RIVERMIKERAT

MECHANIC
6,110 POSTS

Rsontag, did you ever figure this out? Blowing the system out with contaminated compressed air can introduce contaminants into the system, but, like vwscott said, you should never turn the small can over.

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Sunday, July 29th, 2012 AT 6:08 PM