Nissan installed a mechanical thermostat in its Nissan Maxima model. This is the same type of thermostat used in most late-model vehicles. Fortunately for Nissan owners, the thermostat mounts in the intake manifold under a thermostat housing. This location is easy to locate and reach. Because of this, minimal tools and time are needed to change the thermostat.
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Things you need
- 10mm socket
- Scraper or wire brush
Follow the upper radiator hose to the location where the hose connects to the engine. It connects to the thermostat housing. Remove the hose from the thermostat housing by loosening the radiator clamp with a pair of pliers. With the clamp loosened, pull the hose off the thermostat housing.
Remove the two 10mm bolts that secure the thermostat housing to the Nissan's engine. Lift the thermostat housing off the engine.
Scrape the old gasket material off the mating surfaces of the Nissan Maxima's intake and the thermostat housing with a metal scraper or wire brush.
Lift the old thermostat out of the engine and take note of its orientation. Place the new thermostat into the intake with it positioned in the same manner.
Place a new gasket over the thermostat and then place the thermostat housing in top of the gasket.
Secure the housing with the 10mm bolts.
Place the radiator hose back onto the thermostat housing and then secure it with the radiator clamp.
Tips and warnings
- Do not remove the thermostat while the Nissan is hot. Hot coolant burns skin. Allow adequate time for the Maxima to cool off before removing the thermostat.
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