Does anyone know a reputable shop that can service the AC system in my W126.I live in San Pedro, CA. It doesnt blow cold intermittently. Apparently the previous owner had part of the system's plumbing converted to R134, but not all of it. That is the story from my current shop. Is it possible to have both R12 and R134 plumbing and still have an operational system? If so, could that be the reason my AC blows cold often but fails to blow cold sometimes? Thanks in advance for any advice.

Sounds like it could be an electrical problem. AC clutch receiving power intermittently.

What year W126 did you say it is?

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Current fleet
2006 E320 CDI
1992 300D - 5speed manual swapped

former members
1984 300D "Blues Mobile"

1978 300CD "El Toro"

1990 560SEL

Give anything to be back 1978 in San Pedro at 3707 emily Street.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

AC on old cars is a chancy fix. Take their advice and pay their price and don't be ashamed to go back on the guarantee.