The starter is a compact, high-torque electric motor used to spin the engine up to a high enough RPM that it will start. Though model specifics will vary, the starter on any car, including a Ford Taurus, is always located at the juncture of the engine and the transmission bell-housing, and it runs parallel with the engine's valve covers.
The starter is a metal cylinder about 3 inches in diameter and 5 to 7 inches long. It is secured to the engine with three bolts and has a small wiring harness coming from the rear.
Follow the thick red cable running from the positive side of your battery and under the engine. The starter is connected to the other end.
Older Ford Taurus starters (first through third generations) are located on the rear of the engine, near the firewall.
On fourth generation and newer Tauruses, the starter is located on the front of the engine, near the radiator. On current generation cars, the starter is hidden behind a plastic splash shield that must be removed.
A starter produces so much torque, it's capable of powering manual transmission cars at speeds approaching 5 mph.
