Heater Fan With A Mind Of Its Own

[wmkoles@msn.com]

92 500SEL-- wmkoles@msn.com

HEATER FAN ONLY OPERATES AT IDLE WITH REAR DEFROSTER ON. ANY ACCELERATION AND FAN SLOWS DOWN THEN WINDS BACK UP AT STOP SIGN OR LIGHT. MAIN FAN WILL NOT OPERATE AT ALL WITHOUT ELEC REAR DEFROSTER ON. TURN ON THE DEFROSTER SWITCH AND OFF SHE GOES, IN PARK OR DRIVE AT IDLE OR CREEPING COAST. DASH HOT/COLD FAN OPERATES OK BUT NOT AT HIGH SPEED REGARDLESS OF MAIN FAN.

HAD DOOR CLOSER CONTROLLER OR PUMP REPLACED ABOUT A YEAR AGO AND PROBLEM WAS INTERMITTENT SINCE THEN....SAME WITH AIR CONDITIONING. LOST HIGHEST FAN SPEED AROUND THAT TIME.

ALSO HAVE SLOW CURRENT DRAIN WHERE CAR WILL NOT START AFTER SITTING MORE THAN TWO DAYS.

PERHAPS THESE ARE RELATED??? VACUUM LINE PROBLEM???

HELP !!!!!!!!!!!!!!! PLEASE!!!!!!!!!!!!!!!!!!!!!!!