91-92 buick park Avenue, why is it that 2 of my vents are blowing out cold air and 2 are blowing out hot air?

SOURCE: 1998 buick park avenue drivers side blows cold, passenger side hot

sounds like the drivers temp door actuator is not working should be located on the drivers side of the air box down by the gas pedal or center dash area.

SOURCE: 1999 park avenue airconditioner cold on passenger side, just cool

Try Disconnecting the Negative Battery Cable for approx 30 secs.. ( make sure the radio is Off ) Then lemmie know.. Thanx

Marvin

• 85242 Answers
• Posted on Apr 13, 2009

SOURCE: my 1997 buick park avenue

U need to replace the air temperature control blend door actuator motor, this requires removing the dash to access the motor for the blend door.

SOURCE: 1995 Buick Park Avenue - A/C air flows through

You have a plastic check valve with rubber hoses that run across the top of your motor. replace that check valve. I had the same problem. You can get one at any auto parts place.

SOURCE: 2000 Buick Park Avenue Cabin Air Filter Location

Just to the right and above the accelerator pedal you need to remove the left sound insulator panel. Then remove the filter access cover by pushing down and then pulling out. It kinda pops off. Remove the tape on the first filter and then remove the filter by pulling the filter tab. Remove the tape on the second filter and then remove second filter by pulling the filter tab. Remove the third filter by pulling the filter tab. I know you didn't ask about all that but just in case you wanted to replace them.