I am in the process of doing this. I simply unsnapped the black plastic cover, the top came off and the bottom simply moved to the right out of my way. (i did indeed break some of the plastic, but with it being there simply to keep the wires from touching the engine, I will just tape where necessary when replacing.)
See the "Related Link" below for a comprehensive, photo-illustrated conversation on replacing the camshaft synchronizer. Also see "Related Questions" below
The camshaft position sensor is located beneath the wheel on a 1998 Ford Taurus 6 cylander Dohc.
If you are talking about a 3.0 (12 valve), it is on the camshaft position synchronizer at the rear of the engine under the engine control wiring harness, below the thermostat housing area. If you are talking about a 3.0 (24 valve), it bolts to the front of the timing cover with an 8mm bolt.
I had a 94 & 96 taurus and you had to take the ash tray out to get to it.
An arm and a leg.
eBay or your local auto electrician.
It is located on the right hand side of the engine (you standing at the front of the car) under the wiring harness going up into the engine to the left of the throttle cable. Real pain to get at and replace but can be done with no special tools. 7/32 in. wrench is the only way to get at it.
You can "readily" do it yourself! The hub/bearing assembly is held onto the steering knuckle with 3 bolts. See "Related Questions" below for more
It is under the water pump you have to take the timing belt cover off and it is the only sensor there
This is not easy. Get a manual on your car from DISCOUNTAUTOREPAIRMANUALS.COM
Get a shop manual. This is a complex procedure.
Check around the reservior for a wire harness going to there. Try tapping on it.