I believe your 2000 Mercury Sable has a timing chain.
Check your owners manual to make sure.
If it is a timing chain, you don't need to change it unless it becomes damaged or breaks.
〉 Answered on May 22nd, 2014 by Amy Mattinat, Owner and Author at Auto Craftsmen Ltd
It has a chain & chains don't usually require service.
〉 Answered on May 22nd, 2014 by Gelina Aquilina, Service Advisor / Mechanic at
Hi George, On your 2000 Mercury Sable, I believe your vehicle has a timing chain. No scheduled maintenance is necessary. No need to change a timing chain unlike a timing belt. If you're having the motor rebuild, timing chain replacement may be recommended at that time. We've haven't experienced the need to change a timing chain on Mercury Sable. Good Luck.
〉 Answered on May 22nd, 2014 by Maryann Croce, Owner at Croce’s Transmission Specialists