91'500sl,79,850 miles.Car was running fine, then started chugging and had loss of power.Also,smoke was coming from somewhere.I was near home,so I only had to drive it 1/4 mile when this happend.No warning lights came on the dash.Oil had recently been changed and fluids topped off.Anyone have any idea what happend??

 

im having the same problem except im not smoking from anywhere.
but mine is also having idle problems, is yours eating up alot of gas too?

 

replaced a/c comp. and recharged Com. came on for a few sec and now won't engauge also hot air comes in cabin when driving along is there anything that I can try to get ac to work all fuses are good thanks

 

the problem turned out to be bad coils and distributor.Had all replaced at 800.00.Not cheap,but better than I expected after seeing smoke.Now I'm starting to get hesitation problems when taking off and the idle has a slight miss.Will get this checked asap.

 

Have you run the on-board diagnostics via the Climate Control Unit to see what your system is doing?

By the way, you may want to start a new thread with a title/subject different than 'HELP', like 'AC on but runs hot air'? or something along those lines.