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The thermostat should be located in the top radiator hose inlet at the engine. The hose and inlet need to be removed to change the thermostat.
You should have pressure in the cooling system. The radiator cap is marked as to how much pressure it is designed to hold, usually 15 to 17 lbs.
Should be in a removable housing at the engine end of the upper radiator hose
It can be very simple to remove the radiator from a Honda Civic. The first step is to drain the coolant from the radiator. The next step is to disconnect the cooling fan switch and remove the hoses. Then the cooling fan should be removed. Then the radiator should be unbolted and lifted carefully from the vehicle.
Check where the top radiator hose enters the block. There should be a housing that can be removed with 2 bolts. That should be the location of the thermostat.
Have you replaced the thermostat? The water in radiator should not be boiling! ------------------------------------------------------------------------------------------------------ Is your cooling fan/viscous clutch working ? (Helpfull)
Low coolant? Cooling fan not working? Thermostat not opening? Cooling system air bound? Water pump not circulating coolant? Plugged or restricted radiator? Defective radiator cap?
follow the radiator hose from the radiator to the motor (upper hose) this should bring you to the corner of head below the valve cover. the hose will be connected to the water outlet housing , this will have to be removed in order to expose the thermostat.
The radiator may be plugged up. There are products available to help clean the cooling system, and the cooling system should be backflushed after using them.
should be top of the engine in front where the top hose from the radiator connects.
Look where the upper radiator hose connects to the engine and you should find the thermostat housing.Look where the upper radiator hose connects to the engine and you should find the thermostat housing.
Where the Upper radiator hose connects 2 the Engine there is a gooseneck(mounting adapter) take off the housing & there should b a thermostat there IF somebody hasn't removed it.