Repairing the alternator is not a do-it-yourself project.
Replacing them is the typical approach.
If you have the smaller size 3.0 "Vulcan" engine, the alternator is on top of the engine. Pretty easy replacement.
The 3.0 Duratech engine alternator on the otherhand is down on the bottom - accessed from the front passenger-side wheelwell opening.
See "Related Questions" below for more specific details on both.
Autozone.com has the repair guide, including detailed & illustrated instructions for replacing the alternator on all 2000-2005 Ford Taurus / Mercury Sable. See "Related Links" below on this web page.
mercury sable
The 2000 Mercury Sable starter can be found on the right hand side of the engine. The starter will be near the back of the engine.
See "Related Questions" below for information about alternators and serpentine belts. Should be a good start to your project...
on the steer wheel
The 2000 Mercury Sable starter will have three retaining bolts. There will be two cable retaining nuts on the front of the starter.
On a 2000 Mercury sable : firewall 1-----2-----3 4-----5-----6 front of vehicle > driver
torque specs 2000 mercury sable 3.0 12V rod bolts
In a 2000 Mercury Sable : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
There is a thermostat on all cars.
no it will not
firewall 1-----2-----3 4-----5-----6 front of Mercury Sable > driver