Question about 1992 Toyota Previa
Thermostat, coolant sensor, fan relay etc. First check the coolant level, check for leaks. Check if the fans are on when the engine is hot, about to over heat. If equipped with two fans they both should be on. If its all good have the system flushed and a new thermostat installed. If you want to change the thermostat yourself follow the big hoses that are attached to the radiator. Look at each where they attach to the engine. It should be apparent where the thermostat is at the end of the hose. After replacing the thermostat if you don't top off the coolant and there is air in the system the car will over-heat with the new thermostat. Some times radiators have air bleed valves on top. If not then jack up the car a little. Jack it up in the side the radiator cap is at so the air can work its way out. To fill it add coolant when the car is cold, off, and jacked up. Leave the cap off and start the car this is so the thermostat opens and the coolant flows. Continue to add coolant until it over-flows close or put the cap on. Put coolant in the over flow reservoir fill it to the low level. If the radiator has the air valve you don't need to jack the car. If you did it right the car should not over heat and the heater should be working.
Posted on May 15, 2009
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Posted on Jan 02, 2017
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