I have a '98 Buick LeSabre with an A/C problem. When I turn on the A/C in my car, sometimes the cold air doesn't blow out of the vents. The air is sometimes directed through the defroster. Any ideas on how this can be fixed?
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1998 Buick LeSabre Question: A/C vent problem
Answer #1backyard tech July 30, 2009, 17:59Master
Vac to the control head or bad control head,
Answer #2drdozl October 10, 2009, 15:43Rookie
Safely rise front right side of the car. Take a look under the car's fender - under fender, front of the tire. Check the VACUUM line leading to the small TANK . If the rubber connection to the tank is broken or leaking, fix it.
You do not have enough under pressure in the system. When idling, air goes to windshield and legs (default setting). With more RPM, more vacuum, your AC works sometimes.
delane 72 garage and body shop November 12, 2010, 03:59Master
vac line goes to the back of intake is off
Answer #4rick469 May 25, 2013, 18:32Rookie
I had the same problem-
ended up being the ac vacume silnoid-
you can get part on line for about $75
Answer #5bacal123 June 25, 2014, 13:16Rookie
it MAYBE your B C M COTROL MODULE IT CAN BE REPAIRED ,BUT TRY AND FIND A USED ONE AND CHECK FOR A BURNT CURCUIT ON THE BOARD A BAD BCM WILL MAKE YOUR CAR DO CRAZY THINGS OR IT IS THE CLIMATE CONTROL HEAD WHICH I WOULD CHECK FIRST ,U CAN BUY A USED ONE CHEAP PRE TESTED