Also, my temperature button does not control the heat or A/C only blows heat mostly.
Apr 4, 2020 at 5:05 AM
A/C and heat only blows from the defroster and not the vents
2004 FORD CROWN VICTORIA
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ASEMASTER6371
- ✓ASE Certified Mechanic
- 52,796 POSTS
Good morning,
The system works on both vacuum motors and electronic actuators.
https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position
https://www.2carpros.com/articles/replace-blend-door-motor
The fact it is stuck in defrost mode tells me there may be either a vacuum supply issue or the vacuum motor on the heater case is bad. You will need to check for vacuum to the system from under the hood. I attached a vacuum diagram for you to view to be sure there is vacuum.
If it is the motor in the case, the instrument cluster has to be removed. That will be a large project.
Roy
The system works on both vacuum motors and electronic actuators.
https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position
https://www.2carpros.com/articles/replace-blend-door-motor
The fact it is stuck in defrost mode tells me there may be either a vacuum supply issue or the vacuum motor on the heater case is bad. You will need to check for vacuum to the system from under the hood. I attached a vacuum diagram for you to view to be sure there is vacuum.
If it is the motor in the case, the instrument cluster has to be removed. That will be a large project.
Roy
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Apr 4, 2020 at 5:28 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.