Mazda 3 Thermostat and Coolant Replacement

A video short on how to replace the thermostat and coolant in a Mazda 3. This procedure likely covers many model years of the Mazda 3. Specifically, the Mazda in my video is a 2003 equipped with the 2.3-liter engine. This car while it did have heat, that the check engine light was throwing a P0126 (coolant temperatures) and P0128 (coolant at insufficient temperature threshold) engine code. The fix is very easy to complete and can be done with some basic hand tools. If you're not replacing the thermostat that this video can be referenced on how to do a drain and fill on the cooling system. ?? Viewers ?? Viewers