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are you talking about your heater core for heat in the truck ? is there a valve in the heater hose that you have to open to get the hoses hot to the core this is under the hood , follow the hoses , could be clogged core , does it over heat , or get up to temp should be about 190 normal temp for most motors why did you change these parts anyhow , did you use the radiator fix bars leak stuff that you put in , bars leak , if so you may have clogged your core , take the hoses off the core and blow it out ,pain in the but you went this far , ck for that valve to open
If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired. Heater Housing
The heater housing is usually under the dash and must be removed to gain access to the heater core.
Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
The heater housing is disassembled to get to the heater core.
Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
Remove the heater coolant hoses.
Remove the cable and/or vacuum control lines (if equipped).
Remove the heater core securing brackets and/or clamps.
Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.
You probably have a restricted heater core. Buy a can of radiator flush and follow the directions on the can. If this doesn't work, then take both heater hoses loose at the engine an run water thru the heater hose with a garden hose. Hopefully this will clear the restriction.
Hope this helps :)
Hello, No! I'm assuming that the temp gauge is working in truck & you are not over heating. On the passenger side firewall check both hoses going to/from heater core. If both are not warm then it is probably a heating core plug. You will have to replace the heater core.
No you cant.......you have to replace it because the oils in the heater coil will not allow a weld to seal properly......the same thing that happens if you try to weld a condensor unit......if you repair the hole it might hold for a month or so but it always re-opens.....I used industro weld made by JB weld and it held for about 3 months and then the leak came back....after two times of re doing it i finally just replaced it......it just not worth taking it out every three months and re-repairing it.
Probably still some left in the heater core. Should quit after a while, or try blowing it out. I would even flush it with water first. Better to have water leaking than antifreeze. At least your dog can lick it and not die!