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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
I'm leaning toward heater core air pockets (or leak), but I think you would have a temp problem with your engine if this was the case, so I'm not certain. It sounds like air is being directed properly, it's just not warm, and that makes me think heater core problem or switch.
If both heater hoses are hot, that tells me the heater core has hot coolant flowing thru it. This sounds like a blend door issue.
It may have coolant flowing thru it, but, if the air pocket is large enough, not enough of the core will transfer heat to the air passing through it.
One hose would be cooler than the other though, or both wouldn't be hot. If both are hot, that's almost a sure thing that the heater core is working. OP wouldn't be saying this....
Originally Posted by ykkyle
yes i am getting VERY cold air and it does flow out of all vents
Last edited by Dodgevity; Jan 24, 2022 at 09:45 AM.
One hose would be cooler than the other though, or both wouldn't be hot. If both are hot, that's almost a sure thing that the heater core is working. OP wouldn't be saying this....
If the core isn't transferring the heat away from the coolant, the air will be cold, and both hoses will be about the same temp. Of course, if the blend door is broken, you would get the same symptoms.