HEY GUYS, I HAVE A 1989 560 SEL AND BOUGHT A HEAT MODULATOR VALVE FROM YOU THE OTHER DAY, INSTALLATION WAS STRAIGHTFORWARD AND EASY ENOUGH. THE GOOD NEWS IS I NOW HAVE PLENTY OF HEAT! THE BAD NEWS IS THE A/C HAS QUIT. WHEN THE CLIMATE CONTROL RING IS TURNED TO THE COOLING SIDE THE COMPRESSOR TURNS ON AND YOU CAN HEAR THE R-12 PUMPING THROUGH THE EXPANSION VALVE, BUT THE AIR IS NOT COLD. IS THERE A CONNECTION BETWEEN THE VALVE I REPLACED AND THE A/C SIDE? ANY SUGGESTIONS WOULD BE APPRECIATED!