my 807 diesel only blows cool air from the lower vent into drivers door when heating is on, passenger side is fine,any ideas please
Jan 15, 2010 at 9:01 PM
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DAVE H
✓Experienced Mechanic
13,384 POSTS
check for a blocked/jammed control door on heater box
Jan 24, 2010 at 9:08 PM
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