Your car's heater may be blowing cold air because there could be issues with the thermostat, low coolant levels, a malfunctioning heater core, or a problem with the blend door. It is recommended to have a professional mechanic inspect and diagnose the issue to determine the exact cause and necessary repairs.
I assume your car heater is blowing cold air, when the heater is on. It seems that, you have air on your coolant. that air pockets blocks the cooland to travel through your heater. it may be a sign of a bigger problem such as blown head gasket in the old cars, such acura legend
If you feel no air blowing at all (when you are not moving) then your fan is not blowing. If it is blowing air, and it is cold, when the heater is on, then most probably your heater core is leaking, or is clogged. These are easily replaceable and go bad all the time in older cars.
What do you mean by "has no heat"? No air blowing out, blowing out cold air when heater is on, blowing nothing at all? Heater not turning on? What specifically is happening?
Your heater may be blowing cold air because there could be a problem with the thermostat, a lack of fuel or a clogged air filter. It is recommended to check these components and consult a professional if needed.
One reason your home electric heater is blowing cold air is the heating elements are burned out. A bad thermostat may also be the problem.
THE CAUSE for this is that when your cold air is on the petrol is used to create air. and that is how cars create cold air
faulty control valve on heater or air in the lines
Low coolant and a clogged heater core are possibilities.
Maybe its broken. Or maybe you pressed the AIR CONDITIONING
sounds like the thermostat is sticking
You may need to replace your Thermostat or your Heater Core.
Your heater may be blowing cold air due to issues such as a malfunctioning thermostat, low levels of coolant, a clogged air filter, or a problem with the heating element. It is recommended to have a professional inspect and repair your heater to determine the exact cause of the issue.