The oxygen sensors are in the exhaust pipes on most models.
There are two.
Unplug the sensor and unscrew it from the exhaust pipe. You'll probably need a special socket to do it without damaging the wires.
on my 1999 ford mercury villager its on top of transmission under the van
1999 - 2002.
Cam position is taken from the distributor, there is no separate sensor near the cams.
Both oxygen sensors are in the exhaust pipe, one under the front of the engine, one roughly under the passenger seat are.
I payed $117.00 at auto zone
The speed sensor is on the top rear of the transmission. It is held on by one screw.
If you're talking about the sensor for internal temperature it's in the dashboard next to where the shift lever is.
Cam position is taken from the distributor on this vehicle, there is no separate cam sensor.
Cam position is taken from the distributor, there is no external cam sensor.
How do you change the thermostat in 1999 Mercury Villager