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The thermostat will not open properly when installed backwards. The coolant will not flow and the engine could overheat.
The thermostat may be installed backwards
The thermostat was installed backwards - this prevents any coolant from getting to the heater core. Take it out, flip it over and all should be warm and toasty. See "Related Questions" below for more
It will probably overheat. answer= thermostat will not open and will prevent the flow of coolant . which will in turn do damage to your engine
If the thermostat was not installed correctly, the housing can crack but it would leak engine coolant not oil.
It would depend on the degree thermostat installed, probably 195 degrees F.
After changing all the necessary components chances are you wont be able to fill the system with coolant completely until you have ran the engine and if possible BLEED THE SYSTEM OF AIR. Air in the system will not allow coolant to flow.A lot of things can cause overheating, a plugged up radiator, a pinch or obstruction in one of the coolant hoses ( someone used a floor jack on my daughters car and crushed a metal coolant line that runs alongside the oil pan), sometimes if the air is not burped out of the system coolant will not flow so check to see if the coolant is flowing through the radiator ( remove the rad cap and see if the coolant is swirling or sitting still), also advanced timing will heat an engine up. Be sure the thermostat is installed correctly as well, a backwards thermostat will mess things up.
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.
You should be able to run the car with the radiator cap off and when the thermostat opens, it will suck in the coolant and then top it off. Either that or there must be a bleeder screw atop the thermostat housing for bleeding.
Drain about 1 gallon of coolant from radiator Follow upper radiator hose to engine Disconnect housing Note how thermostat is installed Clean both surfaces Replace thermostat and gasket Re-fill coolant slowly to prevent "airlock" Start engine-look for leaks Run engine to normal operating temperature with heater on Check coolant level Drain about 1 gallon of coolant from radiator Follow upper radiator hose to engine Disconnect housing Note how thermostat is installed Clean both surfaces Replace thermostat and gasket Re-fill coolant slowly to prevent "airlock" Start engine-look for leaks Run engine to normal operating temperature with heater on Check coolant level
"COOLANT THERMOSTAT" -COOLANT TEMP BELOW THERMOSTAT TEMPERATURE
Drain about 1 gallon of coolant from radiatorRemove housing at engine end of the upper radiator hoseNote how thermostat is installed in housingClean surfacesInstall new thermostat and gasketRE-fill coolant slowly to prevfent an air lockStart engine and look for leaksRun engine to normal operating temperature with heater onRe-check coolant level