Question about 2000 Mercury Sable

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My 2000 Mercury Sable is running very hot. The fulid is full and hoses have been replaced recently. could this be caused by the thermostat

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Check all hoses, thermostat, radiator and the engine fans for proper operation.

Posted on Jul 30, 2009


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Do the upstream hose cause heat problems in 2000 mercury sable

You talking the upper radiator hose? Rarely they do collapse,but usuall it's a bad thermostat or really dirty radiator,or the cooling fans not activating. don-ohio (:^)

Dec 25, 2012 | 2000 Mercury Sable

1 Answer


follow your top radiator hose to the engine there should be a metal thing attached with 2 bolts, take them out remove the thermostat either replace the gasket or use high temp silicone to reseal it after you put in the thermostat pointed end up

Sep 18, 2012 | 1997 Mercury Sable

1 Answer

When i turn the heater on my 2000 mercury sable cold air comes out

Check the radiator coolant level. If full with proper 50/50 mixture most likely cause is the thermostat.

Oct 15, 2011 | 2000 Mercury Sable

1 Answer

"S" engine.... Run hot, Coolant run out of

water pump is not pumping, could be the pump or a stuck thermostat

Feb 26, 2011 | 1997 Mercury Sable

1 Answer

99 sable 3.0ll Heater omly blows cold air.. radiator and heater core and thermostat replaced.,system flushed.

Here are a couple of things I would try.

Make sure your coolant level is at the full mark in the reservior, ( plastic tank)

Start your engine and let it run 6 to 8 minutes, so it reaches it's operating temperature.
With the engine still running, turn your heater on full blast. You should hear a light clicking noise from the thermostat opening up to cycle the coolant from the radiator. ( sometimes if a sealant is used, and it shouldn't be in most cases, when installing a thermostat excess sealant can prevent the thermostat from operating properly )
If you hear the click from the thermostat then you know that's working. then.......;

Turn the engine off, look back behind the engine at the firewall you should see 2 small hoses, about 1 inch in diameter. While the engine is still hot, carefully reach back and feel both hoses, both should be hot. If only 1 is hot then the coolant isn't circulation through the heater core and you could have blockage in your system.

Another good possibility is, the trap door that moves between the heater core duct, and the a/c evaporator duct is not moving back and forth like it should. To check this you will need to remove a few parts from the lower dash to gain access to inspect.

I hope this helps you.

Jan 26, 2011 | 1999 Mercury Sable

2 Answers

My 2000 mercury sable is over heating after I've replaced my radiator water pump and thermostat after replacing both cooling sensors the fans stopped working

Open the radiator cap with the engine running at temp and look for tiny air bubbles. If you see bubbles you have a blown head gasket.

Dec 14, 2010 | 2000 Mercury Sable

1 Answer

Where is the thermostat located on my 2000 sable

it is in the housing from the top rad hose to the intake manifold,remove the top hose,after draining the coolant,and the thermostat will be under the the peice it fastens to on the engine.

Jul 30, 2009 | 2000 Mercury Sable

1 Answer

Loss of coolant

need to replace that cap

Apr 21, 2009 | 2000 Mercury Sable

1 Answer

R&r thermostat 1998 sable

You can take the thermostat and place it into a clear pot. Pyrex pots or old coffee pots work well. You'll get the water hot and see if the thermostat opens. Take a piece of wire to position the thermostat so you can watch it while it's in the pot. That's one way. Another way is to run the engine until ithe guage shows that it's at operating temp. Check the temp of the upper and lower hoses. The lower hose may be hard to reach to check it. Both hoses should be about the same temp. I use an infra-red thermometer to check it this way. What exactly is your car doing? Evidently getting hot, but what are the symptoms?

Aug 22, 2008 | 1998 Mercury Sable

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