There can be as many as 6 speed sensors, so which speed sensor are we talking about?
There are 4 speed sensors, one at each wheel, if we have antilock brakes. There is a output shaft speed sensor on the output shaft housing of the transmission on the passenger's side of the car, down behind the engine, and there is a turbine speed sensor on the body of the transmission over on the driver's side.
Sounds like you have a bad Vehicle Speed Sensor.
you do have an ( 02 ) sensor on the exhaust system
The coolant sensor is on top of the engine. It is between the ignition coil and the tfi module.
AnswerYes, that and more. See "Related Questions" below for extensive coverage of replacing the vehicle speed sensor (VSS), including links to photos.
What is a gem module for 1999 mercury sable? And what does it control?
On a 1999 Mercury Sable : The transaxle ( transmission ) is located in the engine compartment , bolted to the engine
According to the 1999 Mercury Sable Owner Guide : ( 5W-30 )
On a 1999 Mercury Sable : Relay # 30 is the Powertrain Control Module ( PCM ) relay
According to the 1999 Mercury Sable Owner Guide : ( 60.6 litres / 16.0 U.S. gallons )
1999 mercury sable horn replacement
The speed sensor is on the top back corner of the transmission housing. It is held down by one screw.
The ECM in a 1999 Mercury Sable is located on the inside of the vehicle on the passenger side. It is located under the kick plate.