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Where is the thermostat located in a 1990 grand marquis

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  • Cars & Trucks Master
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See the diagram attached. God bless you
Where is the thermostat located in a 1990 grand - f27d4cf2-8f5e-43ee-b6d7-286d2abce589.gif

Posted on Jul 19, 2013

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Posted on Jan 02, 2017

SOURCE: Where is the Thermostat in

Follow top radiator hose to it

If you have no heat , it is sticking open

They should be changed every 5 or 6 years

Posted on Aug 06, 2011

emissionwiz
  • 75066 Answers

SOURCE: where is the thermostat located on a 1999 grand

follow the upper radiator hose to the engine, drain the cooling system remove the radiator hose from eng, look inside the nipple the upper hose was attached to u will see the thermostat.

Posted on Jun 28, 2009

sledge1863
  • 149 Answers

SOURCE: where is the thermostat located on a 1997 grand

Follow the upper radiator hose down to the engine to the intake manifold, you will find the thermostat housing, under it is the thermostat. Couple of bolts and hose clamps, and your there. Good luck, dont forget to rate.

Posted on Jan 25, 2010

  • 58 Answers

SOURCE: where are the spark plugs located on a 2000 Mercury Grand Marquis

There are eight COPs (coil-on-plugs) to remove. Using a 7mm or 9/32" socket, remove each bolt securing each COP to the intake manifold on top of the engine. Remove all eight COPs, and the spark plugs are underneath. When replacing the spark plugs, use only the proper Ford/Motorcraft plugs, even if they cost twice as much as the aftermarket ones. You will avoid further headaches this way. Hope this helps.

Posted on Mar 30, 2010

  • 5252 Answers

SOURCE: how do i know the thermostat is going bad in a 1990 grand marquis

If anything, it might be stuck partially open. If it were stuck fully closed, the car would really overheat, like boiling hot. You might try taking the radiator cap off when it is cooled down enough, and start the car and wait till it has reached normal operating temperature, so the thermostat should be fully open. Now momentarily squeeze the upper radiator hose together as tight as you can, trying to stop the flow. Look into the radiator and see if you notice a surge of coolant when you let the hose go. If the thermostat is open you should feel the coolant surge when you let your hand go of the hose, and see the coolant coming into the radiator. Just kind of a rough test. If you aren't sure, a new thermostat is always a good idea.

Posted on Jun 18, 2012

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If anything, it might be stuck partially open. If it were stuck fully closed, the car would really overheat, like boiling hot. You might try taking the radiator cap off when it is cooled down enough, and start the car and wait till it has reached normal operating temperature, so the thermostat should be fully open. Now momentarily squeeze the upper radiator hose together as tight as you can, trying to stop the flow. Look into the radiator and see if you notice a surge of coolant when you let the hose go. If the thermostat is open you should feel the coolant surge when you let your hand go of the hose, and see the coolant coming into the radiator. Just kind of a rough test. If you aren't sure, a new thermostat is always a good idea.

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follow the upper radiator hose to the engine, drain the cooling system remove the radiator hose from eng, look inside the nipple the upper hose was attached to u will see the thermostat.

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