Genuine Toyota Thermostat

Toyota Land Cruiser Thermostat Parts Questions & Experts Answers

• Q:

  How to replace a thermostat in a cooling system on Toyota Land Cruiser?

  A:

  Before assuming the thermostat is responsible for a cooling system problem, check the coolant level, drivebelt tension, and temperature gauge or light operation. If the engine takes a long time to warm up, the thermostat is probably stuck open and should be replaced. If the engine runs hot, check the temperature of the lower radiator hose; if it is not hot while the engine is, the thermostat is likely stuck closed, preventing coolant from traveling through the radiator, and it should be replaced. Caution: On models equipped with fuel injection, do not drive the vehicle without a thermostat as it may affect emissions and fuel economy. If the lower radiator hose is hot, coolant is flowing and the thermostat is open. Disconnect the negative cable from the battery, ensuring you have the correct activation code for any anti-theft stereo system. Drain the cooling system. If equipped, disconnect the vacuum hoses to the BVSV on the thermostat housing. Detach the housing from the engine, being prepared for coolant to spill. Remove the thermostat, noting its installation direction, and clean the sealing surfaces. Install a new gasket onto the thermostat or housing, ensuring it is evenly fitted. Install the thermostat and housing, positioning the jiggle pin at the highest point if equipped. Tighten the housing fasteners to the specified torque and reinstall the remaining components in reverse order. Refill the cooling system, run the engine, and check for leaks and proper operation.