Yes.
Put in a winter thermostat
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
it is not a thermostat problem is an actuator located under the dash that lets the water pass through the heater core, all these cars got the same problem dude good luck... Possible the thermostat installed upside down. Spring goes toward engine. Also may be air in the system. Bleed the cooling system with the heater set to hot. The heater core may also be stopped up.
Yes it can cause it to overheat but first check your thermostat. That would be the 1st cheapist thing to do before you did anything else. I got an 85 regal(overheating) and the thermostat or the heater core is the problem im getting them both replaced tomorrow and will let know of how it runs.
Yes. The coolant carries the engine heat to the heater core. Without coolant the heater core does not get warm.
All cars need a thermostat for proper operation and longevity.
The best bet is that the valve that controls the flow of water to the heater core is not functioning, but on some cars it's the flaps that control the air flow through the core.
sounds like the thermostat is sticking
All cars that are water cooled (i.e. they have a radiator) must have a thermostat.
it could be thermostat stuck open ,low antifreeze, also could be ambiance temperature sensor,or the actual temperature controls on your heat and cool panel in the car.I have also seen a cadi that the heater core would clog up from deposits and would not heat but it did not bother the cars cooling as far as radiator,just would blow cold air .also check all your fuses.
There is a thermostat on all cars.
the heater core could be clogged with rust or stop leak . or u don't have enough hot water flow through the heater core . under the hood on most cars on the heater hose is a off/ on valve to control the flow of hot water...anti-freeze...to the heater core.....R