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2006 E 350 Mercedes Benz AC issue


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Hi you doing? I have E350 Mercedes 2006..88,OOO mile and te ac stop working, blow hot air. I hock up a gage and the low side its to high (145) and i never ad freon. After 1 month its start working for 1 day..and stop again..its the ac compressor..? Can be the ac pressure switch? 

1 Answer

You can't diagnose AC with a low side gauge. Since that's the only reading you took presumably it's from a so-called "recharge can" with a cheap gauge on it.

You need to hook up a manifold gauge set and get both high and low readings to do any diagnostics. Then you can use a chart like the following to get an idea of what's going on: