What happens if idler pulley fails?
Idler pulley slippage Once the pulley gets worn out it may start rubbing itself against the engine’s belt. This will produce the squeaking noise which gets even worse as you continue driving the car. If not replaced immediately it may cause damage to parts around the belt if it fails.
What happens if belt tensioner fails?
When the tensioner or tensioner pulley fails, the loss of tension can cause the belt and pulleys to make high-pitched rattling or chirping noises. If the pulley bearing completely fails, it can also cause a squealing or even a grinding noise.
What does a bad belt pulley sound like?
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 fix a pulley belt?
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. These prices do not include added taxes and fees charged by the auto shop.
How do I know if my pulley or belt is bad?
Belt squealing If the surface of the idler pulley wears, or the pulley seizes or binds it may cause the engine belt to squeal as a result of it rubbing against the surface of the pulley. In some instances a bad pulley may bind or slip and cause the belt to squeal when the engine is first started.
How do you tell if a pulley is going bad?
Listen Closely. The idler pulley might make some noise when it starts to go bad. As an example, if you hear the idler pulley or the area of the engine belt squealing, it is an indication the idler pulley might not prove functional for much longer.