MY 1994 LINCOLN TOWN CAR IS OVER HEATING I REPLACED THE THERMOSTAT AND THE WATER PUMP AND THE COOLANT IS STILL NOT CIRCULATING CAUSING AN OVER HEATING PROBLEM WHAT CAN CAUSE THIS OVER HEATING?

DON'T run the engine for too long if your getting steam. That will risk over heating problem putting other engine parts at risk of damage.
How are you testing for circulation? Coolant systems are usually pressurised when the engine is running so a pressure leak somewhere in the system could be the problem, The bleeder valve could be part of that.
Try checking the basics first. Do you have enough coolant in the system? When the thermostat opens, the coolant level can drop.
Check the routing of the belt for the water pump. Sometimes if the belt is set up wrong it can spin the pump backwards causing issues.
There are also times where a new part can be faulty. I had this happen with a new wheel bearing that lasted just 150 miles before it started making noise like it was going to fail.

Quote "and no coolant in my engine." Put some in

You need to bleed the air out of the cooling system. Google a search of the way to do this.

check your vacuum actuated heater valve assembly under the hood for proper function .possible malfunctioning thermostat

-Lot of things cause over heating:
-Thermostat never open or not fully open, Clogged radiator, belt that spin water pump is too lose.

Good luck

Mai

is the water circulating?

make sure the fan is working, turn on the ac and see if the fan works,, if not, check the relay,, or the fuse,, next, check the thermostat,, they can become stuck and the water stops circulating causing the motor to heat up, try those 2 things ,, if the problem persists ,, message me back by replying to this feed, and I'll assist you more

The year of the vehicle, rusty liquid, and overheating, says your radiator could use a replacement. If it was your water pump, you would have liquid coming out of the water pump itself.

What engine? 5.0?

He probably changes the heater core or checks to see if the heater core is circulating the coolant through. If the blower is not working he will check the Resistor and plug near the heater blower under the dash. Both are under the dash. have you replaced the thermostat ? If you do, after refilling with coolant, bleed the sysytem using the bleeding screw at the outlet of the thermostat until only coolant comes out.