How do you replace thermostat on 1995 Nissan Altima?

Answer 1

Should be located in a removable housing at the engine end of the upper radiator hose

Drain about 1 gallon of coolant from the radiator

Remove this housing

Note how thermostat is installed

Clean both surfaces

Replace thermostat and gasket

Re-fill coolant slowly to prevent an airlock

Start engine and look for leaks

Run engine to normal operating temperature with heater on

Re-check coolant level

In my 1999 Nissan Altima the thermostat is located on the lower hose under a housing as described above. this is very unusual place but that is were mine is located.