Get a new one
If you try turn on the heat and a huge cloud of smoke fills your car, or you can smell burning anti-freeze....then you have a busted heater core.
could be a cracked radiator, bad radiator cap, a busted radiator or heater hose, bad heater core, or a busted fill box!
Chances are it is a busted heater core. It your window has a fog on it when you turn on the ac or heater.
You know the heater core is bad when your truck leaks antifreeze onto the floor of the passenger side.
If water is dripping out of the heater core it is about to go.
On the 1994 BMW 530i, the heater core is located under the dash in the engine compartment. You know the heater core is bad when it starts to leak.
i need to know how to replace the heater core on my 1992 s-10 pickup
I need to know how to replace a heater core in a 1992 GMC Jimmy?
how do you change the heater core on a 99 cadillac deville? I need to know, "Kaiser."
hellow just wonderin if you guys know where would be the heater core on my 2003 Lincoln navigator
Since they run in parallel, there's no way that a heater core will cause a radiator to get hot.
You will have only cold air coming thru your heater ducts if your core is defective.