My lincoln ls, ran hot, I replace the theremostat, and now it keeps ejecting the coolant, what could that be?

NOT REALLY ANTIFREEZE KEEPS THEM FRON FREEZING WHEN TEMP OUTSIDE IS BELOW FREEZING

do u hav the rite thermostat or is it in correct--shud be closed at startup-if not takes long time to get at operating temp and bad gas milage too

First check your coolant level.

Next make sure your fan is operating properly.

Lastly, if all of those criteria have been met check your water pump, it may need replaced.

Hope this helps.

You have air in the system
It may work it's way out to the
recovery bottle over time as
it cools and draws in more cool,
so keep container full

I"m not sure if you have a vent hose
to bleed my lincoln ls does

Remove the radiator cap,warm up
when thermostat opens add more
coolant 50/50 or 60/40 Yellow GO5 I
believe

If everything checks out, have a hydrocarbon test done at coolant fill. Head gaskets like to fail at opposite corners on many of those...There was a "secret" recall on those and previous years but from what I've heard it didn't work as planned and some are still failing.
Hope yours is a simple external leak...pressure test and careful going over should tell you that.

from my past experience this car is going to need a new coolant tank the molding seam opens when hot and leaks.

When the car is completely cool,check the electric fan(s) for smooth rotation.

Clean/check/change the thermo sensor,contact and wire.

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Excavate air pocket in coolant system / check for head gasket leak

This test will kill two birds with one stone.

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MAKE SURE THE COOLANT SYSTEM and ENGINE IS COLD!

RAN THIS TEST IN A WELL VENTILATED AREA ONLY!

You will spill some coolant during this air pocket purge test.......BE KIND TO THE ENVIRONMENT and ANIMAL please clean up after the test!

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Put the front end on a pair of ramp or park your car on a VERY STEEP HILL (radiator facing top of the hill) .

Top of the coolant reserve tank

Let it ran for 10-15 minutes.

Monitor for air pockets escaping from coolant reserve tank.

Small amount of bubbles is OK at 1-5 minute mark

After the thermostat open up (after 195 F warm up) at
5-12 minute mark or after high idle you should see less bubbles.

If you do not see any in rush of bubbles then your thermostat may be partially stuck or rusted badly inside the thermostat hosing.

Give the thermostat host few gentle taps.

If you see larger bubbles surfacing after 15 minutes then should do a hydrocarbon (HC) dye test to test for potential head gasket leak.

Let engine cold down and top off coolant reserve tank.

Start monitor for coolant lost

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A coolant flush is require every 2 years or 24,000 miles.

I recommend the thermostat that has a relief pop-let to reduce the change of burst radiator and coolant hoses.

Make sure you get a new thermostat gasket,black RTV and fresh coolant for the job.

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If your LS is blowing hot air on one side of the dash and cold on the other the problem most likely is the Dual Coolant Control Valve. The DCCV is used to control cabin temperature. This valve is mounted down low on the passenger side of the radiator fan shroud, and has 3 coolant hoses connected to it. This valve if found to be faulty will need to be replaced to correct the condition.

any coolant leak? check under the hood and the ground,

There is a hose on the side of the coolant resevoir that has a straight blade screwdriver fitting in it. Open the fitting and this will bleed the heads on the LS. Without opening this you will never get the air out of the head, trust me.