# 2004 Crown Victoria A/C Problem **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [July 7, 2011, 3:57pm UTC](https://community.cartalk.com/t/2004-crown-victoria-a-c-problem/66030 "2011-07-07T15:57:03Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![bjcollin](https://avatars.discourse-cdn.com/v4/letter/b/ecc23a/32.png) [@bjcollin](https://community.cartalk.com/u/bjcollin)\ **Post date:** [July 7, 2011, 3:57pm UTC](https://community.cartalk.com/t/2004-crown-victoria-a-c-problem/66030/1 "2011-07-07T15:57:03Z")
My in-laws have an interesting problem with their A/C in their 2004 Crown Victoria… The air comes out of the defroster vents most of the time no matter what setting is selected on the A/C control panel. Then when they go over a bump in the road sometimes it will redirect the air and it will come out of the front vents for a while which is desired and what is selected on the A/C control panel. Then after a short time it will revert back to forcing the air out of the defroster vents. What do I need to look for? How to fix? Thank you. Brian Collins ([bjcollin@hotmail.com](mailto:bjcollin@hotmail.com)) ---
**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\ **Post date:** [July 7, 2011, 5:22pm UTC](https://community.cartalk.com/t/2004-crown-victoria-a-c-problem/66030/2 "2011-07-07T17:22:12Z")
Tell them to take the car to a shop that specializes in automotive AC systems. They are the experts, and they will fix it. I don’t know whether this system is vacuum or electrically operated, but there is a problem with one of the air direction flaps (doors) in the HVAC system. This is unlikely to be a DIY thing, unless your in-laws are willing to remove large sections of the dashboard, which may or may not be required. I’d take it to an expert.