Heat direction to the dash and feet

JOEUNGERICHT

MEMBER
2004 DODGE DURANGO
4.7L
V8
4WD
AUTOMATIC
130,000 MILES

Hello, when I have heat direction to the dash and feet, no heat is felt at the feet only dash. Same with defrost and feet no heat at my feet. I have checked thermostat and heater core, also I have checked for air in the system. On a separate issue I get no rear heat. Any ideas what the issue is.

7 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,282 POSTS

Can you grasp the heater hoses to the core inlet and outlet to check if they are hot? Please get back to me.

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Tuesday, December 20th, 2016 AT 6:09 PM

JOEUNGERICHT

MEMBER
4 POSTS

Hi Ken,
Yes, I can grasp the core's inlet and outlet. I have checked both hoses and they are hot. To be on the safe side, I have flushed the heater core already as well.

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Tuesday, December 20th, 2016 AT 6:09 PM

THIS IS MIKE

MECHANIC
686 POSTS

It sounds like the blend system is stuck inside the heater box. The entire dash needs to be removed to access the heater box. It is a 8 hour job to remove the steering column and dash to gain access to the heater box, repair it and re-install.

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Tuesday, December 20th, 2016 AT 6:09 PM

JOEUNGERICHT

MEMBER
4 POSTS

Thanks Mike, I had thought the same thing but wasn't certain. I took the dash partially apart. I wasn't sure where the heater box is exactly. When I had the dash partially apart, I could hear the blend door moving inside the heater box. But when I would direct the heat to my feet, it sounded like the electrical gears were struggling to finish closing or opening the door. In addition, it sounded like the heater box is in the center/passenger side of the dash. Again, I could hear it but could not identify were it was exactly.

Thanks - Joe

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Tuesday, December 20th, 2016 AT 6:09 PM

THIS IS MIKE