Genuine Toyota Tacoma Thermostat

Toyota Tacoma Thermostat Parts Questions & Answers

• Thermostat
  90916-03093
  Q: How to replace a thermostat in 2005 through 2009 Toyota Tacoma?

  A: Before replacing a thermostat, it's crucial to check the coolant level, drive belt tension, and temperature gauge operation. If the engine takes too long to warm up, or if it overheats while the lower radiator hose stays cool, it indicates the thermostat is stuck open or closed. If the lower radiator hose is hot, the thermostat is functioning correctly. Overheating might also point to other issues like cylinder head leaks. Replace the faulty thermostat, disconnect the negative battery terminal, drain the cooling system, and remove the engine cover if it's a V6. Detach the thermostat housing from the engine, prepare for coolant spillage, and remove the thermostat, noting its orientation. Clean the sealing surfaces thoroughly. For a new thermostat installation, attach a new gasket (four-cylinder engines) or O-ring (V6 engines). Ensure the thermostat is correctly positioned with the jiggle pin at the top for four-cylinder models. Reinstall the thermostat housing with a new gasket for four-cylinder engines, and tighten it to the required torque. Reassemble the rest of the components in reverse order, refill the cooling system, start the engine, and check for any leaks or operational issues.
• Thermostat
  90916-03101
  Q: How to replace a thermostat in a cooling system on Toyota T100,1995 through 2004 Toyota Tacoma and 1996 through 2002 Toyota 4Runner?

  A: First thing, before you replace the thermostat, check the coolant level, drivebelt tension, and temperature gauge. For replacement of the thermostat, detach the negative cable on your battery, drain the cooling system, and gently detach the thermostat housing from the vehicle. Reinstall the thermostat as well as the housing, tighten the fasteners, and refill the cooling system.