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John_AZ John_AZ is offline
Proprietoristicly Refined
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Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,828
"smoking gun"
Compressor front seal. If you see old oil and grease buildup in front of the compressor the front seal is bad.

If it is just the seal, you can get the compressor resealed. OR get a rebuilt.

If you convert the system to R134a correctly, your cost will be about $300 if you do the work and have a decent vacuum pump.

Prices will go up if you take it to a shop and pay for labor---double/triple ????

You can get a complete updated AC kit for about $500.
Here is a link on installation:
A/C Retrofit - Porsche 951 -

1988 924S, 80K ..+ 1987 924S, 150K DD (+15K est. bad odo)
Old 11-01-2010, 09:15 PM
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