Thermostats
Mazda Protege
Honda Accord EX

How do you replace the thermostat located on a 1990 Mazda Protege LX?

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Wiki User
February 22, 2007 10:29PM

find the thermostat housing, it has a radiator hose connected to it and mine also has a sensor.take the 2 bolts out of the housing pop it off then take a scraper and scrape the old gasket off, be careful not to mess up the flanges. takeout thermostat, with screwdriver if its being stubborn put in new gasket and gasket maker put in thermostat same way old one came out.the guys at auto zone will give you everything it takes just ask.becareful not to break the sensor its about 60$ and the dealership was the only place that had the right one for me.