I changed the thermostat in my 98 Lincoln Continental and it's still overheating, it appears that the water is not cycling from the engine to the radiator, what now?

Does it have an electric fan? They can stop working. don-ohio

The 1999 Continental was notorious for water pump failures Would recommend that you establish whether or not the water pump is circulating water correctly by observing water flow into the radiator when first starting the engine (cold) in the morning. Also, vehicles with excessive rust may have clogged channels in the water jacket around the engine; a condition which may require replacement of the entire engine.

Please note that repeatedly overheating a vehicle causes irreparable damage to the engine. It is not recommended that you drive the vehicle further until the overheating issue has been corrected. Additionally, these vehicles require at least of 50/50 mixture of etylene glycol based antifreeze and water in order to prevent the buildup of rust and deposits over time. If the vehicle was run for any length of time on water only, the damage is likely permanent and irreversible.

have a compression test done to check for head gaskets/cracks. check thermostat fitted correctly. If there is a viscous fan hub then replace it. if the bottom hose stays cool that indicates a blockage and that if the radiator is off the shelf new points to a thermostat fitted the wrong way . over haeting at lights goin slow or working at high rpms while loaded points to the fan hub. If electric fans then it points to the fact that they are not coming on. check ignition timing as a spark after TDC will cause overheating.. If at speed it over heats then check over drive operation as over reving the engine will also over heat the engine.

Check where the top hose meets the motor it should be in the housing held down by two bolts.

I'm not sure the thermostat is the problem. If the thermostat was stuck open the engine would not warm up and also not overheat.
If its stuck closed, the engine would warm up as well as the heater, then continue to the point of overheating.
If the cooling system is low on liquid coolant, or the water pump is not working, the coolant will not flow thru the heater and the sensor may not know to turn the fans on.

check coolant level,did you put right thermostat,could be air look,on top should be bleeder ,have to open to bleed the air,keep engine running.

It is under the cover that the top radiator hoseches to on the engine.

make sure the water pump is actually pumping.. could also be just a bad temp sensor

When your belt let go, it probably heated up and damaged thermostat. Thermostat is opening & closing erratically. FIX = replace thermostat.

no reset button. Take vehicle to your local aotu parts store such as autozone ans ask them if they can run a code scanner test. This can list any and all trouble codes associated witht he light being on as well as reseting the light.