I have a 05 ford taures and wanted to know when to change the timing chain?|||Assuming you have the 3.0L OHV engine (96% of %26#039;05 Taurus%26#039;s do), then you should change it when it has enough slack to effect driveability. It is not a scheduled maintenance item. Here%26#039;s a simple test for the type of chain setup on these engines, which do NOT use a tensioner.
http://www.misterfixit.com/chanslop.htm
If you have the DOHC, then I guess you should have said so.
Oops, I seem to have offended someone by pointing out the facts. LOL|||If it%26#039;s a chain - never.
If it%26#039;s a belt - every 60,000 miles.|||You may need to change your chain but not for many miles. Chains will eventually stretch out but the tensioner should adjust for the slack. So in your case I don%26#039;t see why you would need to change it yet unless you have A LOT of miles on your car.|||Sorry for the metric
80,000-100,000km is a usual guide for a belt. Belts crack and wear with age as they are rubber.
Chains - A chain uses a tensioner (operated by oil pressure) to keep the chain firm. Guide rails and sprockets can wear if the servicing is not regular but the chain will stretch over time but will last years longer than a belt.
