IF YOUR CAR IS HEATING UP(OVERHEATING) AND YOU STILL DRIVING IT, A FAULTY THERMOSTAT IS THE LEAST OF YOUR PROBLEM.
check your antifreeze and water...maybe water pump too.check for a thermostat that is not closing ,.in other words a faulty thermostat
Either the thermostat or the heating element is faulty !
The most common fault are that the fuse has blown or the thermostat is faulty.
A faulty muffler will not cause this but a clogged catalytic converter will.
Cooling fan could be faulty or radiator could be clogged or have slight leaks in it .
Could be several reasons, low on coolant (leak in the system), stuck thermostat, faulty cooling fan(s), bad head gasket, cracked head, faulty fan clutch, faulty water pump, missing fan shroud,
This could be down to a faulty part like a failed heater, circulation pump or thermostat, or even simply that there is not enough water in the Hot Tub.
Low coolant, restriction in coolant flow, faulty fan clutch and/or hub, bad thermostat... you gotta do some actual diagnosis in order to narrow it down.
It could either be your thermostat or your waterpump. In either case you could have full coolant levels but with a faulty thermostat or water pump your car will still over heat. I would start with the thermostat because those are usually the cheapest and easiest to fix.
Try changing your thermostat. It may be faulty.
can a faluty thermostat affect your central ac working?
You need to troubleshoot the system, is the thermostat turned up, are the radiators turned on, is the boiler on and working, if all the obvious are in order then you may have a faulty water pump or blockage (solid or air) in the system.