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Power Strokes
6.4 Tech
No heat now that its cold outside
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[QUOTE="Grey_Matter, post: 1435469, member: 25875"] tried burping it the old fashion way months ago, never worked. after a bunch of reading on the internet i found that once you get air in the heater core you will never get it out without using the vacuum tool. it is acting as if its an air bubble, and there is nothing to show me its not. you'd think with all of the crap ive replaced the problem would have been fixed, but it hasnt been. everything that has been replaced: waterpump, thermostats, blend door actuator, upper radiator hose, both lower radiator hoses, and soon to be the radiator. i have disconnected the heater lines and made sure the heater core was not clogged, the only thing it can be with all the parts being replaced and the heater core verified unclogged is an air bubble, with a hole in the radiator that is sucking in air there is no way to get the air out of the system under vacuum, and it will not burp. the only reason i posted on here is because everything that I have done should have given me heat. unless of course the new waterpump is bad, but that would cause an overheat, which the truck runs at normal operating temp, which also tells me the thermostats work (even though i pulled them and tested them to verify they do in fact work) on the bright side though i am getting really good at filling and draining the coolant :) and on another note, the heat worked fine before the waterpump was changed [/QUOTE]
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No heat now that its cold outside
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