SOURCE: Location of heater core
It is under the dash in the middle of everything. You have to fully tear down the dash. allow at least 8 hours and also get a camera and take a lot of pictures. You can put parts in zip-lock bags and lable as you go.
You can get great info on dodgeforum.com
SOURCE: 1999 dodge durango heater core
it's about 350.00-500.00 pain in the @#$#whole dash must come out are smelling something comin from your vents
SOURCE: 2000 dodge grand caravan rear heater core tubes need replacing
a lot of pain and heart ache. even on a rack they are a pain . check with your dealer there wae a recall on them for failing its worth the phone call to see kdc744
SOURCE: 1999 dodge durango heater core
It's a big job. Drain the coolant down, recover the freon in the ac system and disconnect the lines and heater hoses. Lower the steering column, remove the instrument panel assembly, remove the heater housing. Split the case halves on the housing and there you are. Usually around 500 to 700 dollars at a dealership.
SOURCE: My heater in my 99 dodge durango does not heat
This is provided you have confirmed that a plugged or partially plugged heater core is your problem, and not a vacuum problem, or heater control valve or similar is not defective. Yes it certainly sounds like some blockage/restriction there, but may I advise you to try this first, as it may save a lot of money, time, & aggravation. Go to Rona, Home depot, or similar hardware store & buy a drill pump. (about $25.00 in Canada) but there are cheaper ones around.
Remove your heater hoses at the firewall (when engine cold) and you will see the 2 copper ends of your heater core to attach drill pump to. Put one end of the pump (pressure side) on one fitting, of the core and the other hose from pump suction side, into a jug of CLR (calcium ,lime, rust, remover.) The other connection/fitting from your heater core will need a piece of hose going from it, into a pail, or another jug, same size as CLR to retrieve liquid when it flows through. Circulate the CLR through the core a few times, then let it sit in the core for a while. Then reverse the hoses at the core & circulate it through the other way a few times & let it sit in there as well. I let mine fill the core, then I plugged line where CLR would flow out of heater core & then let it sit all night in there to dissolve as much calcium etc., inside as it could. Then next day, I ran pump in both directions/fittings, again to flush everything out. Then I re-attached my heater hoses. My heat increased at least 75% at idle, because it had removed a lot of the restriction in the core.
Make sure you take all safety precautions, such as eye protection in case CLR splashes in your eyes, and make sure engine is cool, pressure is relieved via removal of rad cap & to avoid burn from hot coolant when hoses removed. My guess is that your into $20-$25 tops, and a whole lot less work. Let me know how it goes.
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