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How can you tell if a pulley bearing is bad?
Squealing. When the engine is idling, a bad pulley may make a squealing sound. This is due to the bearings in the pulley going bad. The bearings may also make various other sounds such as clattering or even a rumbling sound, making the vehicle sound as if there was much more wrong than a bad pulley.
How much does it cost to replace a pulley bearing?
Idler Pulley Replacement Cost The cost to replace the idler pulley of your driver belt will usually be somewhere between $80 and $200. The cost for the new part should only be anywhere from $40 to $90, while the cost of the labor will be anywhere from $40 to $110.
How long does it take to replace a pulley bearing?
Replacing the pulley should only take an hour or two, and the parts will vary in cost from one type of car to the next.
Why does my pulley make a noise when I spin it?
If there’s evidence of glazing on the pulley surface, the belt has been slipping on it. Spin the tensioner pulley by hand and listen to it. If the bearing is good, the pulley will spin freely, straight and true, without any noise. If that’s not the case, you have a bad bearing and must replace the tensioner.
How to quickly pinpoint a noisy bearing, pulley, alternator?
How I quickly pinpoint a noisy bearing, pulley, alternator, water pump, on any vehicle. – YouTube
How to troubleshoot a tensioner pulley noise?
Rotate the tensioner counterclockwise just far enough to slip the serpentine belt off the pulley closest to the belt (or pulley easiest for you to reach, depending on what kind of vehicle you’re working on). Rotate the tensioner back into position. Shine the flashlight on the tensioner pulley and examine the pulley face.
Why does my idler pulley make a clattering noise?
Bearing failure – The ball bearings inside the idler pulley can go bad, which causes the idler pulley to make rumbling or clattering noises. The bad bearings also make a high pitched whine when you start the car.