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Posted on Jan 02, 2017
sound like you have a bubble in the system. make sure you drain all liquid out, make sure the thermostat is the proper temp rating and is not backwards. Fill the radiator up turn the car on turn the heater on full blast fill up the over flow with anti freeze. put the radiator cap on. watch the temp in the car. dont let it get all the way in the red. you should see the overflow tank start to get the anti freeze sucked out of it don't let run dry. I had this problem with my 2004 dodge ram. This is how a master mech told me to do it
Posted on Jan 17, 2009
SOURCE: no heat
Either your heater core is plugged or the system has an air lock. To cure an air lock loosen the rad cap, not the overflow, to the first notch and run the truck for a day or two. Check the coolant level often and keep it topped up. If this doesn't solve the problem you could try a "reverse flush" on the system to loosen up whatever is blocking the heater core, otherwise you'll have to replace the core. Hope this helps.
Posted on Feb 09, 2010
Did he check the a/c heater housing flaps and solenoid/motor links that opens and closes these FLAPS for a/c and heater? Sometimes the solenoid activates and LiNKAGE seems stuck to open the heater FLAPS/DOOR. Bring it back to the mechanic and test those links and motors that i said! Hope that helps u out! taah!
Posted on Nov 16, 2010
If only one hose going to the core is hot, then the heater core valve is bad. It's what stops or allows hot coolant into the core. Only one hose being hot means coolant is not traveling through the heater core. Have that valve checked out.
Posted on Jan 12, 2011
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