Question about 1997 Oldsmobile Cutlass

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Thermostat i need to replace my thermostat im not sure where its located and how to replace it.

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  • fufa1972 Oct 14, 2008

    thank you very much for responding so quickly im gonna work on it today

  • sekse Feb 15, 2009

    dont know where the thermostat is located

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Follow your top radiator hose to where it meets the engine block. Your thermostat is located under that metal connection, that the hose connects to.
To change it, drain out some of your coolant (enough to get it below the height of the connection) undo the 2 bolts that hold that metal connection on. Seperate the 2, and you'll see the thermostat. Remove it (it just pops out) clean off the old gasket material and sealer. Place new sealer on both sides of the new gasket (just a little) and put it back together. Becareful not to overtighten. Refill the coolant, start the car and check for leaks.

Posted on Oct 14, 2008

  • Coss Oct 14, 2008

    You're welcome.

    Make sure to have the new thermostat, gasket, sealer and coolant before you start.

    Also, make sure to dispose of the old coolant properly (it is poisonous to animals)

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1 Answer

I need to change my thermostat


Pretty simple to do, make sure the engine is cold. Drain half of the coolant from the radiator, no need to let it all go, unless it is all due to be replaced. The thermostat is located under the thermostat housing which can be found at the engine end of the outlet water hose(top hose). The housing will only be held in by 2 bolts. Remove the air cleaner housing to get easy access. Take out 2 bolts, pop of thermostat housing and you will see the thermostat, pull it out.

You can see if it is faulty simply by dropping it into a container of boiled water. If the thermostat is closed at cold it should open when in the boiled water and close when removed and cool. If it is open when cold, don't bother to test it, toss it over your shoulder in the bin straight away.

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