We just changed one on a 1995 Mercury Mystique 4/95. It was located on the transmittion. They tell us there are 2 for this model, other one is supposed to be located in Instrument panel but we couldn't find it.
You can recharge your 1998 Mercury Mystique air conditioning system through the low pressure port. You can find the low pressure port on top of the air conditioning compressor.
Connected to the bell housing. Fllow the wireing and you will find it.
The speedometer is driven by the vehicle speed sensor. See "Related Questions" below for more about where to find it, and how to replace one.
If you know the velocity you can find the speed, you don't need a sensor.
how can i find where the camshaft sensor on a 1990 mercury marquis
Take a continuity tester and check them. you'll find the bad one
In the drivers footwell , behind the kick panel ( there is an access hole )
Go to Kragen.com and search for speed sensor. You will find a picture of it.
go to jtr ( jags that run ) you will find a complete speed sensor download, , don
check your owner's manual
Did yOu ever find the speed sensor? What was the problem befor changing it