Question about 1991 Mercedes-Benz 300 Diesel
Left side blows cool and right side blows heat, while on max AC. This car has a left and right temp control.
You have a vacuum leak to the heater controller. Check vacuum line (green and white) between engine and control valve (yellow) just above master cylinder
Posted on Jul 11, 2008
Posted on Jul 03, 2008
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Posted on Jan 02, 2017
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