Yes. If the thermostat is not staying closed long enough for the engine to warm up adequately, you will not get heated coolant into the heater core and the heater will not blow warm air. Change the thermostat for a 195 and you should get plenty of heat. It could also be as simple as not having enough coolant. worst case senerio would be a bad heater core.
You could have a problem with your thermostat in the car.
the heater control has a thermostat for the heater only. that thermostat needs replacing
thermostat needs replaced
It could be that your head gasket is blown.
I have a 2000 zx2 and it has a thermostat, if that is your question. Having said that, my heater quit working and it turned out to be the cable came loose under the dash on the left side of the radio. At first I thought it was the thermostat but was wrong. Duct taped the cable in place and the control and heater started working fine again.
I had this problem once with a different vehicle. You may check the heater control. That may be the problem. Hope this helps.
Thermostat stuck open, if older car possibly clogged heater core- when run at oper temp the hoses going into/out of heater core be sure one is very hot - start with thermostat $$$ cheap & easier than a heater core problem!
you will need a new thermostat to cure this problem. ian
the thermostat used to control the heater and after we select the four pole switch to some number the thermostat start connect the power to the heater at the same time the heater start to heat and when we select the switch to zero position the heater not work
I had no heat in my escort either. A new thermostat, cooling system flush, new heater core, another new thermostat, ect. but nothing worked. Still only slightly warm air from the vents. The thermostat housing has a thermostat bypass in it. This bypass is always circulating coolant through your radiator. I plugged mine off with a thermostat gasket and now my car heats and blows hot air with no complications. Good luck.
usually it is a vacuumn problem right at the heater control switch or sometime under the hood
Change your thermostat. Mine had the same problem and it was stuck open.