My 1987 Chrysler Fifth Avenue a/c is not working it only blow out from the bottom and top vents only how do make it blow from the central vents
I believe these old systems use cable actuated doors
The 5th Avenue was pretty high end in the Chrysler lineup, it may well have automatic climate control with vacuum or electrically operated flaps. These links indicate that's the case:
https://eightiescars.com/2021/12/21/1987-chrysler-fifth-avenue-sedan/
On a vehicle that old it could be almost anything but vacuum leaks in the HVAC control system would be a good place to start. The best bet for the owner would probably be to obtain a shop manual in order to troubleshoot the problem.
Thank you for the heads up @chucktobias
how do make it blow from the central vents
By repairing the HVAC control flaps and the mechanism that operates them.
I believe these old systems use cable actuated doors and one of them may have become detached. Look behind the HVAC control panel for any obvious disconnects.
