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Old 08-16-2002, 12:29 PM
stevebfl stevebfl is offline
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
You have the right info. In the snowflake position A/C isn't added to the equation untill all heat is over. It tells that by an electrical signal from mode door poteniometer. The pushbutton controller waits for a certain voltage (there are at least two versions at two different voltages). Thus the problem can be that the door doesn't make it closed or that the potentiometer is bad or out of adjustment.

You will need a vacuum schematic to trace the vacuum leak if such is the case. The CD covers this fairly well.
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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