Question about 1997 Dodge Ram 1500 Club Cab
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Posted on Jan 02, 2017
Sounds like the air "blend" door might be inoperable. This door opens and closes a specified amount to regulate the amount of either cooled or heated air, as requested by the climate control unit. If the door is continually in the position which is bypassing the heater core (cold setting), the air will not get warm regardless of the condition/operation of the heater core. I'd suggest having this component checked.
Posted on Nov 28, 2008
If you're not losing coolant, it's much more likely to be the water pump. Most heater cores leak when they go so although it's not impossible, I'd be very surprised if the heater core was even partly to blame for your overheating problem.
Posted on Sep 05, 2009
It seems to me if your heater core is hot, and the fan blows cold air, then your ducting is closed off. Try and see if your duct door is opening up. You say you changed out your controls, but it sounds as though it wasn't your controls that were bad, but what they control is not opening up.
It's all well and good that the heater core is getting hot, but if the fan cannot deliver that hot air passing through it, then walah.
It has to be an air duct obstruction. Either the ducting is collapsed, the duct door is not opening, or you have some obstruction blocking the ducting. My guess, because that is all I can give you without seeing for myself, is that the linkeage or solonoid that opens the duct door is not working. Older cars had a cable, but I believe newer use a solonoid to operate the opening and closing of the door. The door is there so you don't get the heat from the core when you are using AC.
Hope this helps.
Posted on Sep 19, 2009
Have you checked to see that you have antifreeze up to the proper level. That is always the first thing to check when cold air blows out the heater when you have the heat on.
Posted on Dec 15, 2009
Hi, are any of the heater hoses getting hot at the heater core.If both hoses or hot you have a blend door problem.If one hose is out and the other is cold you have a stopped up heater core, if both or cold you have a restriction in cooling system or a weak water pump. Have you tried to flush the cooling system. Thanks if i can help just re post.
Posted on Jan 07, 2011
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