Bad pulley sounds often include squeaking, grinding, or rattling noises, which can indicate issues like worn bearings, misalignment, or lack of lubrication. These sounds may suggest that the pulley is under excessive strain or that the belt is not properly seated. Ignoring these noises can lead to further damage and potential failure of the pulley system. Regular maintenance and timely inspection can help prevent these problems.
remove drive belt and check all pulley wheels for freedom of movement sounds like a pulley wheel is bad, probably the belt tensioner pulley
A bad idler pulley on a 2006 Mitsubishi Raider typically produces a high-pitched squeaking or grinding noise. This sound may become more pronounced when the engine is running, especially under load. You might also hear a rattling noise if the pulley is severely worn or damaged. If these sounds are present, it's advisable to inspect the pulley and associated components for wear or failure.
That pulley has a bearing on the inside of it that has gone bad. Replace the pulley with a new 1
I'm assuming you mean a pulley, which is what the belts run on. If so, depending on which pulley the bearings could be bad or if it is the crankshaft pulley (big pulley near the bottom) the rubber could be getting bad.
Bad bearing in a belt driven accessory? i.e. alternator, water pump, idler pulley, belt tensioner, etc.?
Sounds like you need a water pump, The bearings in the water pump are making the noise not the pulley.
When it goes bad
In most cases you can purchase the bearing and pulley as an assembly from your local auto parts store.
it's not as bad as it sounds.
cause the tensen pulley could be going bad an my need to be replaced or even your alternater pulley can be getting ready to go bad
Serious vibrations.
It sounds like there is a pulley that is bad or the serpentine belt is bad. Try spraying a little water on the belt while it is running, if the nosie stops, it is likely the belt.