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-   -   A/C Service Help (http://forums.pelicanparts.com/porsche-964-993-technical-forum/860834-c-service-help.html)

GBX 04-15-2015 04:35 PM

A/C Service Help
 
Hey guys. hoping to get some quick opinions. When i bought my car the A/C wasn't working....Tank was empty and needs to be converted to R134. Now the car is at the shop and the tech reported the following:

Quote:

A/C COMPRESSOR DOES NOT ENGAGE, FOUND SYSTEM LOW ON CHARGE CAUSING COMPRESSOR TO NOT ENGAGE, CHARGE WITH SMALL AMOUNT OF REPLACEMENT R12 AND A/C DYE CONFIRM A/C COMPRESSOR FUNCTION AND LOCATE A LEAK. NOTICED MOISTURE AROUND A/C CONDENSER, SUSPECT IT TO BE LEAKING, RECOMMEND MONITORING FOR LEAKS. A/C COMPRESSOR ALSO SHOWS SIGNS OF MOISTURE AROUND HOUSING HALVES.
RECOMMEND REPLACING AND PERFORMING R134A RETROFIT:
REPLACE A/C CONDENSER, REMOVE FRONT BUMPER, REPLACE CONDENSER AND ALL SEALS.
REPLACE A/C COMPRESSOR, RECIEVER DRIER AND EXPANSION VALVE. REPLACE ALL SEALS AND FLUSH ALL LINES AND COMPONENTS TO GET RID OF ALL OLD OIL AND R12 REFRIGERANT.
RECHARGE SYSTEM WITH NEW A/C OIL AND R134A REFRIGERANT


So, basically, they're recommending a retrofit plus replacing both the condenser and compressor since they have signs of leaking. My thinking would be to convert first and monitor the system before replacing. Any thoughts would be helpful since the compressor ($400) and condenser ($200) aint cheap.

Thanks!

wwest 04-17-2015 09:06 AM

Take it to an non-Porsche A/C certified shop (different one), instruct them that you want to convert to R-134a (<$200). Do NOT tell the new shop anything of the above.

RSTarga 04-18-2015 10:31 AM

normally the 964 leaks occur in the evaporator not the condenser. You need to evacuate and recharge with full load of r12 and have them take a sniffer to find the leaks.
I would not convert to r134 until I found the leaks.


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