Question about 1999 Dodge Durango
The windows on my 1999 durango won't stay defrosted. The temp guage is about 195 degrees. The duct shifts from winshield to dash and to the floor alright. I'm thinking that it's maybe a ventlation problem. The book doesn't indicate a cabin filter or anything. What can it be? Help!!!
I suspect you're having the same or a similar problem that I have - that your heater core might have a pin-hole leak. It'd be somewhat confirmed if you're finding that you have to replace antifreeze more than once every couple of weeks or so. If you haven't been checking that regularly, next time the engine is cold, take off the radiator cap. If the coolant is up to right below the cap, and the coolant tank is shows you have coolant (and someone hasn't been maintaining this on a frequent basis) then I'm wrong. What happens if you have the leak is that every time you stop the car, the engine-heated coolant vapor rises out through the defog/defrost ducts and condenses on the cold windshield. Worse is that the water evaporates, leaving the coolant on the windshield, and it has an affinity for water - so the next time you stop, the problem is a little worse - more water on the inside of the windshield. Enough of that, and cold enough weather, and it freezes. Another possible problem is that the heater core is becoming plugged, and isn't able to move enough heated water to make enough warm air. Either one of these means that you get the priviledge of having the heater core replaced. From what I've seen on other pages, changing this involves draining the cooling system, removing the freon from the A/C, removing the dash (the whole thing) from the firewall, to gain access to the heater and A/C cooling coil, replacing the heater core, re-assembling the dash, replacing the coolant, and recharging the A/C. Standard shop time is 9 hours. Some have commented that if you're an experienced mechanically adept person, you might manage it in 6 hours. I'm waiting for the weather to warm up a bit, and learn more about the dash remove and replace process, before I take my wheels out of service.
Posted on Jan 26, 2009
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Posted on Jan 02, 2017
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