Yes, a bad EGR (Exhaust Gas Recirculation) valve can contribute to engine overheating, even if the thermostat has been replaced. A malfunctioning EGR valve can lead to improper exhaust gas recirculation, which may result in increased combustion temperatures and strain on the cooling system. Additionally, if the EGR valve is stuck open, it can cause a loss of power and efficiency, further exacerbating overheating issues. Regular maintenance and diagnostics are essential to identify the root cause of engine overheating.
A thermostat is one cause of over heating engines.The "Related Question" below lists a few other suspects to investigate that can also contribute to overheating.
If your main gas valve is stuck in the closed position, it must be replaced. This condition is the reason your thermostat will not cause the main burners to light.
Check into the temperature control valve--this is different than the thermostat.
Common causes of an overheating water heater include a malfunctioning thermostat, sediment buildup in the tank, or a faulty pressure relief valve. Solutions may involve adjusting the thermostat, flushing the tank to remove sediment, or replacing the pressure relief valve. Regular maintenance and inspection can help prevent overheating issues.
The Thermostat and Temp and Press Valve is faulty and needs to be replaced. or the PRV (pressure reducing valve) is dirty and must be replaced
If you look at the bottom of the thermostat you will see the spring wrapped around the valve that goes up & down to open & close the thermostat. The spring is made from heat sensitive metal and is what opens and closes the thermostat as it expands & contracts. If the thermostat is installed upside down, the spring will not be in the coolant and will not open until it gets hotter than the specified temp of the thermostat and could cause overheating problems and coolant flow issues.
changing the valve cover gasket will not fix an over heating problem u need to check out the cooling system. Radiator, water pump, hoses, belts
You replace the gas valve.
It could be your head gasket... is it blowing blue smoke out the back? or you could have a messed up valve or something It could be your head gasket... is it blowing blue smoke out the back? or you could have a messed up valve or something
The white smoke could be valve stem seals. The overheating could be a partially blocked radiator. Don't bother trying chemicals to clean it out. Take the radiator to a shop and have them professionally clean it. could be a blowen head gasket!
Since this happened right after changing the thermostat, the most likely cause is the common mistake of putting it in backwards. The spring-side has to face the engine because that is what makes the valve open. The thermostat never opening means the coolant never gets a chance to travel through the radiator where the heat is "removed". Don't feel bad, like I say it's pretty common, and I should know :)
try replacing the radiator cap, because it has a pressure release valve that can stick or take out your thermostat altogether, sometimes it runs better without it in the summer only. . HOW IS THE CONDITON OF THE RADIATOR? THERE COULD BE SOME CROSS TUBES THAT ARE CLOGED UP TOWARD THE BOTTOM THAT CAN NOT BEE SEEN. I TEST THIS BY PLACING MY HAND ON THE FACE OF THE RADIATOR AND TRY TO FIND COOL SPOTS.