This is a very involved procedure, that is too complex to post here. Go to any auto parts store and purchase a repair manual for you ride. There you will find detailed instructions. Cost around $12
Follow the top radiator hose back to the engine. This is where the thermostat is. Remove the 2 bolts and there it is.
bolt pattern for a 1994 ford thunderbird
For a 1994 Ford Thunderbird : ( DOT 3 brake fluid , meeting Ford specification ESA-M6C25-A )
A 1994 Ford Thunderbird is ( OBD I )
No.
on the thermostat housing
~112MPH
two
Unleaded
chain
follow the upper radiator hose other end is connected to thermostat housing
Standard tyre size for 1994 Ford Thunderbird LX 4.6L V-8 automatic is 205/70R15