This link has detailed instructions and photos
http:/www.lincolnvscadillac.com/tech/Lincoln-mark-viii/Thermostat-Replacement/index.htm
Bad thermostat?
It is under the power steering reservoir and can be removed by removing two bolts. It has three hoses going to it
You have to replace it.
Go to http://www.lincolnvscadillac.com/tech/lincoln-mark-viii/Coil-Spring-Conversion/index.htm
hi man i am awsome
No
go to markviii.org. they have a answer for almost anything with the lincoln mark viii
of course
Drivers side under the hood look to the right and down from the radiator and you will see a journal, where the hoses meet, in that journal is the thermostat
Save yourself some grief and take it to a repair shop
This is easier than I thought it would be. Took about 20-30 mins. The housing itself is not attached to the block or any stationary object under the hood. It is actually held up and in place by the 4 hoses that attach to it. Remove the hose clamps and the hoses and the thermostat housing will just come out. Scott Fuller 1993 Lincoln Mark VIII owner
put it up on ramps or jack up the driver's side front wheel. the thermostat is found in a small assembly on the driver's side in front of the motor. it has three to four coolant hoses attached to it and three bolts to take it apart.