Where is the temp sending unit on 1996 Ford F-150 with an inline Six?

On a 1996 Ford F-150 with an inline-six (4.9L), the coolant temperature sending unit is typically located on the cylinder head, near the thermostat housing. However, there might be two: one for the gauge and one for the computer (PCM).

It's a good idea to consult a repair manual specific to your truck's year and engine. A Chilton's or Haynes manual will have diagrams showing the exact location. You can also search online for a diagram using "1996 Ford F-150 4.9L engine diagram". Looking at images of that engine online might also help you visually identify it.

Be aware that the location could vary slightly depending on specific options or minor manufacturing differences. If you can't locate it easily, a mechanic or auto parts store employee familiar with that engine could assist.