hmm...so am i better off taking this to an A/C specialist or can i work on this system myself? I do virtually every other repair necessary on this car and our 190e so I'm fairly competent with a wrench. If I go to an auto parts store can I find the equipment to test my system pressure? I'll run the car with the AC on and check to make sure that the fans are engaging and the compressor is running. If i set the temp wheel at 65 and the fan on hi the compressor should run enough to kick the aux. fans in right? That should/would also tell me if the system was low on 134 (ie if the fans did not come on)