Turn the key to the right.
Attached to the back side of the throttle body.
If the sliding door on the 1999 Mercury Villager will not stay open, check for something that is not allowing the latching mechanism to lock into place. Make sure that the door is all the way back so that it can lock in.
The speed sensor is on the top back corner of the transmission housing. It is held down by one screw.
i found out how to do it.
it is in the back of vavle cover on firewall side. you can't see it unless you remove the intake plenum.
Follow the instructions on Youtube.
Under the car by the back axle.
It's on the top back corner of the transmission.
On the top of the transmission housing at the back corner.
The alternator is mounted low on the back side of the engine.
In the ceiling housing for the rear A/C.
It's at the top of the transmission on the back corner.