Does the 2000 Nissan Sentra have a timing belt or chain?

The 2000 Nissan Sentra is equipped with a timing chain. This means that unlike a belt, You shouldn't have to replace it. However, there are exceptions. The chain is comprised of links that turn the camshaft and crankshaft sprockets. It's job is to keep these components synC-HRonized at all times because they control the opening and closing of intake and exhaust valves every time the engine fires.Since the chain is always moving, there are times when it can become loose or pieces can break off due to friction. If left to worsen, it can break, which results in expensive engine damage. The most common symptom of a failing chain is rattling in the engine compartment. This is from pieces breaking off and falling in the oil drain pan where they bounce around while the vehicle is moving. The average cost to have the chain replaced on the 2000 Sentra is $470 to $580, including labor.