My 230 TE arrived in the philippines with no A/C unit so the its not included in the wiring harness of the ECU. The car Idles at 1500 RPMs and drops to 900-1000 RPM if you put it in Drive or you Turn on the A/C and around 750 if you are in drive and A/C on. It idles lower when in reverse. I found a wiring diagram online and found PIN 19 as the AC comp cntrl. Upon checking my harness blank yung PIN 19. Is it posible or has any body try to connect the AC controler to the ECU? Do you know anybody who can do this kind of job or knows someone who knows to rewire a benz? Or has any body tried to put like a separate idle up for the A/C from another car? I know this is a common problem for servo of the mitsubishis' and one common fix is to put a separate idle up usually from a toyota.