If your 2001 Vauxhall Corsa is blowing warm air despite replacing the water pump and thermostat, there may be a few potential issues to investigate. First, check for any air pockets in the cooling system that could affect circulation. Additionally, ensure that the heater matrix is not blocked or leaking, as this can impede proper heating. Lastly, inspect the coolant level and ensure it's at the correct level, as low coolant can lead to inadequate heating.
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.
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.
Replace Thermostat
An AC blowing air at 65 degrees could be due to a couple of reasons. It might be set to a lower temperature on the thermostat, or there could be an issue with the thermostat itself. Additionally, the AC unit may be experiencing a refrigerant leak or a problem with its components that is causing it to produce colder air than desired.
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.
Check the temperature gauge. If it is running cold, replace the thermostat.
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.
a faulty thermostat control