2000 Durango A/C Puzzle
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Joined: Aug 2025
Posts: 1
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Welcome Fubar!........ I like that one 
1. Could be the blend door.
2. There is an adjustment but I'm not sure the switch you have. Can you upload a pic?
3. Follow the line down from the switch to the blend door. Again see #2^.
4. What motor are we working on? Sounds like a 5.9L?
5.9L
Attachment 102533
This is the location of the vacuum line that goes to the heater blend door and goes into the cab firewall with the heater core lines. (little black one) Check the vacuum lines if it keeps moving (Defrost vents/Main vents/Floor vents). Also check the psi on the freon BC it could be low.
1. Could be the blend door.
2. There is an adjustment but I'm not sure the switch you have. Can you upload a pic?
3. Follow the line down from the switch to the blend door. Again see #2^.
4. What motor are we working on? Sounds like a 5.9L?
5.9L
Attachment 102533
This is the location of the vacuum line that goes to the heater blend door and goes into the cab firewall with the heater core lines. (little black one) Check the vacuum lines if it keeps moving (Defrost vents/Main vents/Floor vents). Also check the psi on the freon BC it could be low.
yup. My peoblem. Thia vacuum leak.. now i need to find thia rubber multi size coupling
