The heater core is leaking. GEt a manual from DISCOUNTAUTOREPAIRMANUALS.COM and replace it.
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?
Because your jeep wrangler is over heating, you must have a sensor in the dash not working If that smoke is steam, the heater core is leaking and in need of replacement.
it could be a couple of things you could have a bad thermostat or a bad heater core
Your heater core is plugged and you need a thermostat.
Because you don't have enough coolant in your radiator.
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.
Have you checked your thermostat?
It would be best to disconnect the coolant lines and flush the core after the radiator flush. This will clear any sediment from the core.
The efficiency of an oil-filled radiator heater is influenced by factors such as the quality of insulation, the size and design of the heater, the thermostat accuracy, and the heating element's effectiveness in transferring heat to the oil.
The water pump on the engine circulates coolant though the engine, radiator and heater core (which is usually located under passenger side of dash). The heater core looks like a small radiator and once the engines coolant starts warming up thr heat can be spread by the blower motor mounted to the side of the heater core. Voila! Hot air blowing out of whatever vent you choose.
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.
Your heater may be blowing cold air because of issues such as a malfunctioning thermostat, a clogged air filter, low levels of refrigerant, or a problem with the heating element. It is recommended to have a professional inspect and repair your heater to determine the exact cause.