The average cost for a drive belt idler pulley replacement is between $143 and $164. Labor costs are estimated between $64 and $81 while parts are priced between $79 and $83. Estimate does not include taxes and fees.Click to see full answer. Thereof, what happens when a pulley goes bad?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.Similarly, can I drive my car with a bad pulley? So, how long can you drive with a bad idler pulley? The safety recommendation is not to drive the car at all and take it to a mechanic immediately. You should be concerned if the vehicle makes squeaking or rattling noises. The car can still run for months or break after a few days. Correspondingly, what noise does a bad pulley make? 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.What does a bad alternator pulley sound like?If you hear a squeaking, squealing, or an irritating noise coming from your vehicle as it runs, it could be from your alternator pulley. Not only is this noise annoying, but a slipping or loose pulley could mean other problems in the future if not fixed.
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