Spray it with soapy water and see if the noise changes. If so replace
belt. There is only one belt on that engine. You need to check the
idler/tensioner pulleys too as well as the waterpump and alternator
when you have the belt off.
for information on replacing.
The idler bearing is a common failure point on that engine.
There is likely only one, called a serpentine belt because it goes back and
forth to hit all of the pulleys. There might be two belts, the main one that
hits lots of pulleys, and another that drives the AC. The lay out and
function of belts is determined by the design and space available.
If you need one belt, you need them all. There are also tension pulleys and
idler pulleys that are prone to failure, and they should be replaced as
When installing the new belt, you route it so that the smoooth pulleys are
on the back of the belt and the pulleys with grooves go on the inside of the
belt. The inside of the belt has ribs, the back of the belt is smooth.
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