My 1997 mercury sable has a check engine light on all the time. Thanks to Automotive FOrum and some nice person's suggestion to take it to AutoZone for free diagnosis, I did and the message was "Cam Position Sensor".
Can some one tell me the following?
1) Where is this located?
2) Is it easy to replace?
3) How much will it cost me, part? labor?
Any help will be appreciated

dude , definetely wrong forum . sorry