How to Replace a Thermostat on a 1989 Toyota Tercel
1. Start by gathering the necessary tools and parts. You will need a new thermostat, a gasket, a 5/16-inch Allen wrench, and a bucket to catch the coolant.
2. Loosen the drain plug on the radiator and drain the coolant until it is below the level of the thermostat housing.
3. Use the Allen wrench to unbolt the thermostat housing. Be careful not to lose the gasket.
4. Remove the old thermostat from the housing.
5. Install the new thermostat in the housing, making sure that it is seated properly.
6. Replace the gasket and bolt the thermostat housing back into place.
7. Tighten the drain plug on the radiator and fill the radiator with coolant.
8. Run the engine and check for leaks.
_Here are some additional tips:_
*Before you get started, make sure the car is parked in a safe location and that the engine is turned off.
*If you want easier access to the thermostat housing, you may want to remove the air filter housing.
*Be careful when draining the coolant, as it can be hot and can cause burns.
*Reinstall the drain plug and fill the radiator with antifreeze/coolant mixed with water 50/50.
It's important to properly maintain your car's thermostat to ensure that the engine operates at the correct temperature. If you have any questions about how to replace the thermostat on your 1989 Toyota Tercel, please consult with a qualified mechanic.
