On a 2003 Ford Taurus :
The 3.0L " Vulcan " V6 engine ( and the flex fuel version ) have ( 1 ) timing chain
The 3.0L " Duratec " which is a Dual Over Head Cam design has ( 2 ) timing chains
chain.
Chain.
Chain
Chain
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.
The 1999 Ford Taurus does not have a timing belt. It has a chain that requires no maintenance.
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
On a 2003 Ford Taurus : The 3.0 liter " Vulcan " V6 engine ( and flex fuel version ) have ( 1 ) timing CHAIN The 3.0 liter " Duratec " DOHC , V6 engine has ( 2 timing CHAINS , one chain to each cylinder head