Where is the thermostat on a 2003 Mazda Protege 5?

Answer 1

If you look from the front of your car with the hood open, look where the exhaust manifold is at should be right in front of you engine..follow it down about half way on the left side you should see a rubber hose that runs from the radiator to the engine. Follow it towards the engine youll see it ends at a water outlet kind of at an angle held by two bolts, thats where your thermostat is.

Its easy to repalce,

-Drain coolant from radiator

-pull the hose off the outlet

-unbolt the outlet

-pull thermostat

-replace with new thermostat and new gasket (maybe some gasket sealer also if you want)

-Rebolt back on along with hose

-fill with 50/50 coolant, and let it run with the radiator cap open

to let air bubbles out untill the fans turn on at least twice and you see it level out. Keep an eye on the temp gauge.

- once thats done recap it and your done

probably an 1hr to 2 hour DIY job with basic tools

hope this helped