Hi guys, I have a '91 300E that has been converted to 134a. I have had the car for a couple years plus, and the a/c has always worked great. Now it's just slightly cold. Compressor sounds like its turning on fine.

I am handy, but know nothing about automotive a/c systems. Where do I start? I am on a budget and would like to try something myself before bringing it to a shop.

Thanks for any advice...

-GH

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