Question about Dodge Durango

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No heat but blows cold air

I have flushed out the cooling system twice and want to avoid doing it again.. Just need to know the next thing I should try. I have a 2000 Dodge Durango. It snows inside my truck.. my dash gets covered in snow coming out of the vents.. Please help

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  • Dodge Master
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To get what you describe is a problem associated with a faulty TX valve and a dirty evaporator core. The TX valve is not controlling the gas flow required by the thermostat and the dirty evaporator is allowing the build up of ice on the fins. Flushing the radiator will help with the more efficient cooling of the coolant but you have a thermostat in the coolant system that prevents water circulation until a certain temperature in the engine is reached. Your problem may be that the thermostat is stuck open or the coolant needs the air to be bled out of the system allowing the heater to get hot water.. have a radiator shop do this for you as sometimes it has to be pressure bled.

Posted on Nov 25, 2013

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Posted on Jan 02, 2017

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countrysi248
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SOURCE: no air coming through the vents

Sounds like the door that brings in fresh air is not closing enough so when you get to moving it is not letting the cab recirculate the inside air and bringing in some from the outside which comes from the bottom of the windshield on the outside. along with when you get to hitting the gas going down the road you might be loosing a little vacuum and that door going to your vents might close a little.. ? what you thinkin? just a few ideas might not be a fix though thanks Jerry

Posted on Apr 22, 2009

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SOURCE: 1999 Ford Taurus, no heat.

Try checking the two pipes that go into and come out of the heater matrix, is one of them hot? if it is there is an air lock within the matrix, Also is the thermostat opening fully? Sorry i know you said you have changed it twice already but take it out check settings when it should open and close, then boil some water and test the thermostat

Posted on Dec 30, 2009

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SOURCE: 2000 satin sl1 heater blows cold air, had the

my 2000 saturn sl blows cold air with the heater on. I changed the thermostat,and checked out my heater core.Still blows cold air.

Posted on Oct 10, 2010

SUPRDTY
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SOURCE: 1998 dodge durango air not blowing through vents

most likely your controls are bad or a vacuum leak in dash

Posted on Mar 21, 2012

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SOURCE: ac vents not working

There is a blend door acuator which moves when u change your settings. Its a electric motor. Down under dash, Will need a mech and a heating and cooling diagram to find where the motor is,

Posted on Jun 13, 2012

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This might sound like too simple a solution, but after owning 5 expeditions, I think I may have an idea.

It is possible that the cooling system is simply not full of fluid. If, when changing the thermostat twice and other service, the system was not sufficiently bled or burped, this can happen. What happens is that people do these repairs, and then fill the radiator, but fail to completely flush the cooling system. My son had the exact same problem on his Mazda 3 (Mazda was owned by Ford then), and flushing his cooling system solved his problem.

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