Two days after fixing the air conditioning (finally), the 380SL began to shake at idle and under light acceleration (both with the compressor on or off).
I suspected the idle speed control valve...I disconnected the wire leads and started the car. The idle stabilized at 1500 RPM as advertised in the service manual (no shaking). I plugged the wires back in and everything is working fine!
Question--could the air conditioning have caused the idle speed control valve to stick? Since it hadn't been made to compensate for the compressor in a long time?
Another question--is there a safe way to maybe clean out the idle speed control valve? Is there maybe some sort of gunk in there?Am I making any sense? Like I said before, the car runs fine after disconnecting and reconnecting the wires, but I'd like to prevent it from happening again!