The P/O of the 560SEL that I just bought NEVER used the a/c as he states and now the a/c doesnt work. My mech put some freon it and and everytime the a/c is engaged, I hear a loud rattling coming from the compressor. Is the whole compressor bad or is it just a clutch or some other related component?

im having the same problem !!! my mechanic said its bad ekk. I got one for 66$ used... i have to get the old one off and put this one on, btw doees anyone know the easiest way to remove the compressor?

Im also interested in someone answering his question since i have the same problem

i know what you mean, but the shop i take my car will only work on my car if they purchase the part sooo yea and the compressor they are silling me its close to 400. not including labor...

Aw...I was just being a wiseguy, but you quoted me before I could delete it. Anyhow, I said that because not only is it a Bad Idea to vent refrigerant out into the air, it's also quite possible to injure yourself with it. If you have the refrigerant recovered by a shop, you will likely be able to handle the r+r part yourself. First, what year and model are we talking about? Is it a 560 SEL like the original posters? And, to the original poster, it's possible for any number of things to make noise when the compressor is engaged, but if the compressor itself is rattling, its days are numbered. Consider replacing it before it blows crap all through the A/C system.

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1989 300 SEL that mostly works, but needs TLC

all ac is out of the system, i went to go charge the system with r12 then he had to take it out cuz of a small leak and he still charged me 125 bastard oh well...sooo yea i wanan do the compressory myself. DO i have to add any oil to it ? or just bolt in and thats it oh right and make sure all o rings are replaced and good.

With a used compressor, I would suggest draining whatever oil is in it, then adding the correct amount and type of fresh oil before installing it. You should be able to find that information by using the Search function, or by posting up the year, model and engine type of Benz we're discussing...in which case somebody might know offhand, or be willing to look the info up.

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1989 300 SEL that mostly works, but needs TLC