What happens when thermostat is removed?
Typically removing the thermostat will cause the engine to overheat at normal operating RPM. When the restriction is removed by removing the thermostat, at idle too much coolant will flow typically causing the engine to fail to reach it’s designed operating temperature.
How do you change the thermostat on a Nissan Pathfinder?
Follow the upper radiator hose to the intake manifold. Locate the thermostat housing at the point where the radiator hose meets the front of the manifold. Pull off the upper radiator hose from the thermostat housing by loosening the clip at the engine-end of the hose. Remove the lower radiator hose as well.
What should I do if my Nissan Pathfinder is hot?
Run your Pathfinder with the heater blowing until the engine warms up. Check for leaks. Do not drain coolant from your Nissan Pathfinder if the engine is hot. Allow the engine to cool before attempting to drain the coolant.
What kind of gasket does a Nissan Pathfinder use?
For VG30 engines produced after 1987, Nissan Pathfinders use a liquid gasket rather than a paper gasket. Use a paper gasket for all other Nissan Pathfinder engines. Reassemble the thermostat housing.
Follow the upper radiator hose to the intake manifold. Locate the thermostat housing at the point where the radiator hose meets the front of the manifold. Pull off the upper radiator hose from the thermostat housing by loosening the clip at the engine-end of the hose. Remove the lower radiator hose as well.
Run your Pathfinder with the heater blowing until the engine warms up. Check for leaks. Do not drain coolant from your Nissan Pathfinder if the engine is hot. Allow the engine to cool before attempting to drain the coolant.
For VG30 engines produced after 1987, Nissan Pathfinders use a liquid gasket rather than a paper gasket. Use a paper gasket for all other Nissan Pathfinder engines. Reassemble the thermostat housing.
How can I test my car thermostat?
You can test the thermostat yourself by placing it in boiling water and ensuring it is opening up at the correct temperature.