Taurus uses chains. If it is a 3.0 liter 12 valve engine, it has one chain. If it is the 3.0 DOHC 24 valve engine, it has two chains.
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.
It has a timing chain that should last the life of the engine.
The 1999 Ford Taurus does not have a timing belt. It has a chain that requires no maintenance.
In a 1999 Ford Taurus : The 3.0 liter " Vulcan " V6 engine has ( 1 timing CHAIN ) The 3.0 " Duratec " has ( 1 timing chain to each cylinder head , so there are 2 timing CHAINS )
timing chain
timing CHAIN
timing chain
timing CHAIN
In a 1992 Ford Taurus , both the 3.0 and the 3.8 V6 engines have a timing CHAIN
Chain
Chain.
Chain