The coolant temperature sensor on a 1993 Mercury Topaz is located at the rear of the engine. To get to it, you have to remove the driver side fan.
Mercury Topaz was created in 1983.
Sorry , no ansewer because no Topaz 1995 ; last production was 1994.
Not quite sure what you are looking for?
Inside the fuel tank.
Look for a cylindrical object bolted to the fuel rail or valve body with a vacuum hose attached to it.
it should be located right below the oil filter in the front
Try the Fuel tank
Have to take off the head, it's there.
starter motor is below and to the right of oil filter
In the gas tank.
The oil pan is bolted to the bottom of the engine