If you are blowing cold air, it probably not a temperature sensor problem. Was the thermostat put in right - side - up??? Also, the sensor wire could have possibly broken or come unplugged while you were installing the new thermostat. And there are only a couple of reasons your only getting cold air now and that is (a) you installed the thermostat wrong or(b) the new one is defective. Remember to replace the coolant. Sounds simple but too many forget too.
It could also be that the small plunger, just to to the left of the spark plugs/toward the back of the engine, is just stuck. Had this happen many years ago. Pull on it and then spray it with lubricant.
No. The thermostat controls the flow of water through the radiator, not the heating core. Using a thermostat with a higher temperature rating delay the opening of the thermostat (and the flow of water to the radiator) until that higher temperature is reached. This will cause the coolant to run hotter.
thermostat probably stuck open needs to be checked or replaced
try replacing the thermostat
sounds like the thermostat is sticking
Either the temperature blend door is not working, the thermostat is stuck open or you are low on engine coolant.
heater core plugged or air locked check to see if hoses going to heater core are hot
If you are not getting heated air blowing from the heater core and your engine coolant temperature gauge is showing LOW or below normal , ( then YES , IT'S POSSIBLE that your engine cooling thermostat is sticking open )
Low coolant? Thermostat not closing completely allowing engine temperature to rise? Plugged heater core? Temperature blend door malfunction in the HVAC housing.
Thermostat sticking. Replace thermostat and gasket.
Yes they can stick open or closed. An automobile thermostat is just as likely to stick open as it is to stick shut. Symptoms of a stuck open thermostat are slow to reach normal operating temperature and only warm air blowing from the heater. Symptoms of a stuck closed thermostat are engine over-heating and radiator boil-over.
The heater core is usually your last resort. So now start from the end to the beginning, core, thermostat, flush, hose, fluids. Follow the trail and your bound to find your answer.
Check the temperature gauge. If it is running cold, replace the thermostat.
Which part isn't working? Is it blowing air but it stays cold, is it not blowing at all or is it just blowing to the defroster?
My blower would blow cold air at idle & engine would start to overheat, I replaced my thermostat & problem solved.
could be the water pump That is a typical symptom of an air lock in the cooling system
most thermostats have a degree difference.. what that means is if you have it set on 74 and the degree diffence is set at 4 it will have to get to 70 degrees before shutting off.. but if it gets down past that i would say the thermostat is no good and needs to be replaced.
Your thermostat is stuck open.
Probably a bad thermostat.
You need to change your thermostat in the car.
Instantly. If someone is telling you otherwise, they're blowing smoke.
You should check the thermostat and the fuse for the heater.
Low coolant? bad thermostat? Heater core plugged, restricted, or airbound? Temperature control not working properly? Water pump not circulating coolant?
Low coolant? Thermostat not closing allowing engine temperature to rise? Plugged heater core? Air bound heater core? Water pump not circulating coolant?
Probably because the thermostat is stuck open, preventing the engine from warming up properly. Not only do you not get warm air, but it is bad for the engine to run at a low temperature.