It would be a good idea to pick up a Ford Tempo owners guide or repair manual to find the location. Not only that, but if there are future problems you'll be able to fix them considering the repair is not major. I know Ford Tempo thermostats go for about $15 bucks. http://www.93Tempo.Citymax.com
where is the thermostat located on a 1989 ford tempo
follow the upper radiator hose
follow top radiator hose to the end .thats the thermostat housing.on drivers side of the engine
the answer to your question is , in the gas tank!
inside the gas tank
Were is the ac drain on a ford tempo,
Follow top rad. hose.
In the gas tank.
On the right side of the motor, mounted to the drivers side of the motor between the motor and a hose. Its smaller than you would expect.
follow the upper radiator hose to the thermostat housing
the fule pump is in the gas tank in the 1993 ford tempo
The thermostat is located at the end of the 2" radiator hose that leads into the engine block. The housing doesn't look like the traditional round ball. Also, there is a "sensor" that plugs into the housing. Hope this helps.