Either the thermostat was not the problem, or you put it in backwards.
where is the thermostat
According to one of Fords websites : For a 1994 Mercury Villager , 3.0 liter V6 : The radiator cap is ( 13 PSI )
A Villager is not equipped with any kind of GPS device.
The 1994 Mercury Villager has a 3.0 litre V6 engine from the factory : ( it has 6 engine cylinders )
According to one of Fords websites : For the 3.0 litre V6 engine in a 1994 Mercury Villager : ( the spark plugs are gapped at .032 inch )
middle of engine ,fan belt side of engine,follow upper radiator hose to housing that housing has another hose connected U SHAPED where it connects to bottom is thermostat housing's bolts a little tight area but just replaced it in my wives 1993 villager
No, it is not an interference engine.
under the hood
The 3.0 litre V6 engine in a 1994 Mercury Villager has a timing BELT
On the EGR valve assembly.
dash dash
On the brake pedal assembly.