A/C Blowing Hot and Cold Simultaneously!!

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A/C Blowing Hot and Cold Simultaneously!!

07-03-2002, 11:28 AM

WRM

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Join Date: Jun 2002

Location: BURBANK CA

Posts: 151

SOUNDS LIKE A VACUUM LEAK. TEST THE VACUUM SYSTEM FOR THE VACUUM ELEMENTS. CHECK TO SEE IF THERE IS ANY CORROSION UNDER THE BATTERY. THERE IS A VACUUM LINE IN THAT AREA. IF IT GETS A MINOR HOLE IN IT YOU WILL LOOSE VACUUM TO THE SYSTEM. THE HEATER VALVE IS SET UP TO GO TO HEAT MODE IF THERE IS A VACUUM LEAK. NO HEAT FROM CENTER VENTS IS A STANDARD ON ALL MB'S. THATS WHY YOU DONT HAVE HEAT THERE.

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