OEM 2000 Toyota Tundra Thermostat

2000 Toyota Tundra Parts Questions & Experts Answers

• Q: How Should You Service and Repair Your Thermostat on 2000 Toyota Tundra?

  A: You must drain the engine coolant before beginning the thermostat servicing process. Start by detaching the 3 nuts and wire clamp together with the water inlet and thermostat from the water pump. Then take off the gasket from the thermostat. Before evaluating the thermostat you should submerge it in water while heating the liquid to verify that the valve opens correctly between 80 - 84 degrees Celsius (176 - 183 degrees Fahrenheit); replace the thermostat if it fails. The thermostat needs replacement if the valve lift measure falls short of 8.5 mm (0.335 inch) at 95 degrees Celsius (203 degrees Fahrenheit). The valve needs to be fully closed when the temperature drops below 40 degrees Celsius (104 degrees Fahrenheit) and if it cannot achieve this closure it requires a new thermostat. Start by installing a new gasket onto the thermostat and after placing the device with bottom downward direction secure water inlet bolts to 20 Nm (200 kgf-cm, 14 ft. lbs.) torque. Begin by attaching the lower radiator hose followed by a coolant addition then start the engine. Check for any coolant leaks followed by another step of checking the engine coolant level.