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Thermostats
Oldsmobile Alero

Where is the thermostat located on a 1999 Oldsmobile Alero 2.4L?


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2007-01-20 12:08:54
2007-01-20 12:08:54

Its where the water pump is on the passengers side. The fact that the previous answer mentioned the passenger side of anything is about the most useful tidbit of the answer. To get to the thermostat, the easiest way to find it is follow the lower radiator hose from the radiator to where the rubber hose connects to a steel tube that runs under the engine, up the other side and ends up just under the exhaust manifold on the left side of the engine. To actually remove the thermostat is another matter. First, you need to drain the coolant from the lines. Then, you need to follow the metal tube half-way across the bottom of the engine and unfasten the bolt that holds the tune to the bottom of the engine. Then, you need to remove the heat shield that covers the exhaust manifold. From this point, you can unbolt the tube that holds the thermostat. One of the bolts you can actually see by looking down between the second and third exhaust runners. The other is closer to the front of the engine and you will have to remove this one by feel(the front of the engine is on the passenger side of the car because the engine sits sideways).

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