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  #1  
Old 12-31-2009, 06:41 PM
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Default Big Bang after heater core job

I just changed my heater core myself last week because it is a $60 part and a $1000 dollar job. I drove all over the state between then and now keeping and eye on gauges and everything was running fine until today. I heard a loud bang from under the hood. Stopped immediately and popped the hood to find smoke and that oh so familiar antifreeze smell i had just started to get rid of in the cab. One of the hoses coming from the heater core seemed to be leaking right were they meet, and the other was fine. Temp didn't shoot up because i didnt lose that much fluid and it was five miles home so i just drove it back with the heat off and let it cool for a while. Went back to poke around and found that the leaky looking hose was still attached to the pipe that comes off the heater core but the metal pipe was very wiggly like it was no longer welded/soldered to the heater core very well. What might cause that much pressure to build up? If i do this god forsaken job again is it going to just blow again?
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Old 12-31-2009, 06:47 PM
red041500 red041500 is offline
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the inlet/outlet may have broke off the actual heater core by what your describing. if thats the case at least this time you'll know what your doing at it wont take as long. did you get the new core from the dodge dealer ? when there is so much time and labor involved i only use dealer parts , aftermarket parts are cheaper for a reason. good luck , hopefully im wrong and its just a hole in the hose but that doesnt sound to be the case. possbile the outlet wasnt welded very good to begin with and it was bumped and wiggled alittle to hard upon install , when your system got to full operating pressure and was there for awhile it let go.
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Old 12-31-2009, 06:52 PM
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I've had bad luck with some of the aftermarket heater core's in other vehicles so it wouldn't suprise me if it wasn't a faulty core.
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Old 12-31-2009, 06:57 PM
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A bad radiator cap, weak hoses, loose clamp...have you reattached it and checked to see if you're getting coolant in the airbox?
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Old 12-31-2009, 07:03 PM
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I haven't checked anything since then because the garage is full right now. I was wondering why if it broke on the interior side of the firewall it still is leaking this way. I will investigate further in the morning i guess.
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Old 12-31-2009, 07:19 PM
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If it's a defective heater core , contact whoever you got it from and see if they pay labor for replacement . Won't hurt to ask . More than likely they'll say no . Well give you another heater core . Let us know what you find out .
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