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Sara Lauter

Sara ... 6/15/2010

1995 Buick Park Avenue Ultra 6 Cyl 3.8L

Body & Interior

Air conditioner will switch from vent to windshield blower on its own

AC is working, but cold air will blow out windshield (defroster vent) and not vents on dash. Also, cold air on drivers side, hot air continually on passenger side - help

1 Answer


HouseCallAuto 6/16/2010

You have a vacuum leak in the vacuum supply line at or near the vacuum storage canister which is a tank mounted just to the right of the master cylinder / brake booster. The tank could also be leaking vacuum. To explain why your symptom happens would be too much rambling, but the cause is a vacuum leak 4 sure.


Sara Lauter 6/17/2010

Thanks, I will try to locate where you are talking about. Is the line a rubber one or metal?

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