Hi my car have a problem I don't know if the problem is the heater core because when I turn on the heater the air is not hot inside and is not liquin water inside the car I confuse now what I have to do could you help with some answers
Usually if heater core it will leak inside car, with the car cold(not driven for at least an hour) take off radiator cap and make sure its full, you may have to add some antifeeeze. What does the temperature guage say
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All I can think of is something is plugging up your heater core. When you turn it on--the coolant tries to rush into the heater core (which in case you didn't know is behind your glove box) and it pushes said obstruction to the point where it closes off the line.
When you shut the heater off--the coolant is not trying to pass tthough the heater core any longer--so the obstruction follows gravity to the lowest point away from the heater core.
if the car has been drained recently you might need to bleed your small rad in heater you call it your heater core sometimes get air locked or possibly your heater valve not turning on when you put on heat
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.
try back flushing your heater core find the 2 hoses to the heater and start the motor let it run for a bit feel the hoses 1 should get hot and 1 should be a little cooler the 1 that gets hot is the inlet and the cooler 1 is the outlet remove them after the motor has cooled down and use a garden hose to back flush the core flush water through the outlet you dont need to use high pressure if you do there is a chance the core can crack and leak.