Where is the ac damper in a 2003 dodge durango one that separates outside air from cold air?

There isn't a single "AC damper" in the way you might be thinking in a 2003 Dodge Durango that cleanly separates outside air from recirculated (cold) air. The system uses a blend door and a recirculation door, working together to control the mix of outside and inside air. These are controlled by the climate control system's actuators.

These components are *not* easily accessible without removing parts of the dashboard. They're located within the HVAC (Heating, Ventilation, and Air Conditioning) housing, deep inside the dashboard. To find them, you'd need to:

* Consult a repair manual: A factory service manual for your specific year and model Durango is essential. It will show you diagrams and steps to disassemble the dashboard to access the HVAC system.

* Be prepared for a complex job: Accessing and repairing these components is a significant undertaking, often requiring specialized tools and considerable mechanical aptitude. It's rarely a simple fix.

If you're experiencing issues with outside air mixing with cold air (or vice-versa), it's likely a problem with one of these actuators, the blend door, the recirculation door itself, or the vacuum lines that control them. A malfunctioning blend door is a common cause of this.

Instead of attempting this yourself unless you're experienced, it's strongly recommended to take your Durango to a qualified automotive air conditioning technician or mechanic. They have the expertise and tools to diagnose and repair the problem efficiently.