If you need to change the thermostat a 1992 Nissan Maxima and you are having trouble locating it, the job can become much longer than necessary. Most qualified service centers can change a thermostat in a matter of minutes, but they have the necessary manuals to tell them where everything is located. The method for locating the thermostat in most vehicles is similar.
Tools Used: Tools, Adjustable wrench
Unlatch the hood by pulling the hood latch (labeled “Hood”) located on the kick panel under the dashboard on the driver’s side of the Maxima. Pull up on the hood. It will only open about one inch until the hood security latch is pressed. The security latch is located in the center of the vehicle and is accessible between the hood and the grill of the vehicle. Press the latch and lift up on the hood simultaneously. Prop the hood up using the hood prop.
Locate the top radiator hose and trace the hose from the radiator to the thermostat housing. The thermostat is inside of the thermostat housing. Remove the two bolts that hold the housing onto the intake manifold with an adjustable wrench. Lift up on the housing to remove it from the manifold. The thermostat is now exposed.
Tips & Warnings: Do not remove the thermostat housing until the engine has had adequate time to cool off. When the engine is hot, radiator fluid can reach temperatures exceeding 200 degrees.