timing chain
You do not need to replace the timing chain because there is no timing belt at all on Ford Taurus. It has a timing chain.
I'm not a mechanic / technician but on a 2004 Ford Taurus if you have the 3.0 liter DOHC " Duratec " V6 engine you would because it has a timing chain going to each cylinder head
In a 1992 Ford Taurus , both the 3.0 and the 3.8 V6 engines have a timing CHAIN
timing CHAIN
timing chain
timing CHAIN
chain.
Chain.
Chain
Chain
The Ford Taurus does not have a timing belt, it has a timing chain. The timing chain is designed to last the life of the engine, and does not need routine replacement.