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pulley

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Symptoms of a Bad or Failing Water Pump Pulley
Common signs include physical damage to the water pump pulley, extensive wear on the water pump, grinding sounds, and the engine overheating.
How to Buy a Good Quality Idler Pulley
The idler pulley system drives a car’s alternator and is part of a belt and pulley system that also covers power steering, the air compressor, and other devices. The pulley is essential;...
Symptoms of a Bad or Failing Idler Pulley
Common signs include a damaged bearing or pulley, squealing from the engine area, and visibly worn pulleys.
How Belt Pulleys Work
There are two main types of car pulleys: crank pulleys, and accessory pulleys. Most pulleys are driven by a main crank pulley, which is bolted onto the crankshaft. When the engine is operating, the...
How Long Does a Crankshaft Harmonic Balancer Last?
The crankshaft harmonic balancer is also known as the crank pulley damper. It is connected to the crankshaft on the engine and reduces vibrations that originate from your engine. In addition, it...
The Mechanics of Cars: Simple Machines in Automobiles
Simple machines are single, mechanical devices that help improve the daily life of humans by allowing them to work faster, easier, and more efficiently. Simple machines are considered...
How to Replace Your Car’s Idler Pulley
A serpentine belt is guided by an idler pulley. Repairing a bad pulley involves removing the belt, replacing the pulley, and reinstalling the belt.
How to Replace a Power Steering Pump Pulley
A power steering pump pulley helps you turn the steering wheel with ease. If broken, it should be replaced to ensure a seamless drive on the road.
How to Replace a Water Pump Pulley
The serpentine belt or drive belt drives an engine’s water pump pulley, which rotates the water pump. A bad pulley leads to a failure of this system.

Related questions

Question
AC clutch making squealing noise
Of course, make sure the oil and refrigerant charge are correct. Too much of either will create an excessive load on the compressor. Also, check the operating pressures to see if they are within an acceptable range. Check belt alignment...
Question
A/C V-belt keeps going bad within six months.
Hi there. Check the angle of the V-belt as its mounted on the air conditioner pump. For the belt to burn off or decay that fast, either the belt is too tight, too loose, or the pulley is offset from...
Question
Ac pulley faulty
Hello. If you choose to not use the air conditioning, there is no issue with bypassing the compressor altogether. There are several options for you to choose from when it comes to bypass pulleys. Most of them are available online....
Question
Expected repair costs for a pre-owned car
Hi - although you have already purchased the vehicle, it may be worth having the car thoroughly inspected to uncover any problems not already visible or inherent issues. A YourMechanic mobile professional can come to your location to perform a...
Question
My serpentine belt & pulley fell off
Hello there, a variety of failures will cause your 2004 Ford Crown Victoria to have a drive belt and pulley fall off. The steering will become difficult when the drive belt comes off the engine as the power steering pump...
Question
Noises and power loss while driving
The high pitched sound you are hearing is the drive belt is slipping on a pulley. Remove the serpentine belt and spin all of the pulleys that can be spun. Listen for any noises. If you hear a noise on...
Question
Lower idler pulley
Hi. No, you do not need to replace the bolt when changing the idler pulley. You must be very careful not to over torque the bolt or this will cause damage to the treads which in turn may allow the...
Question
Why would my serpentine belt keep shredding? I've changed it two times now.
The serpentine belt is driven by the engine from the crankshaft pulley. The belt is routed around all the accessory pulleys: water pump, alternator, power steering pump and air conditioning compressor (if equipped), as well as a belt tensioner or...
Question
Screeching and howling noise under the hood
Hi there. The serpentine belt rides on a variety of pulleys, as well as the tensioner. Each of these "rotating elements" has a grease filled bearing, typically ball bearings. Over time, the high heat of the engine causes the...
Question
Defroster and heater blows cold air while idling - 2005 Ford Escape
Hi there - the lack of heat from your HVAC system could be a couple of things: bad thermostat, heater control valve, or air in the cooling system. If the engine come up to proper temperature and stays there (i.e....
Question
Is it safe to change pulleys?
As long as the pulley was designed to replace your pulley then you should not have any problems. The tensioner is designed to put a specified amount of pressure on the belt and should not be modified to reduce the...
Question
Water pump/water pump pulley is bad?
Hey there. When you move the fan, if you see the pulley moving up and down then you have a water pump bearing that went out. You should also notice if there is a wobble of the cooling fan clutch...
Question
My car would not turn over and made a loud noise when trying to start it
This depends on what the loud noise was. If a starter was not working, then you would hear either a simultaneous clicking sound for a low battery or a one time click for the starter solenoid sticking. If you heard...
Question
Drive belt or pulley makes a screaming noise
Hi there, thanks for writing in. In most cases the screeching sound that is made upon start up is an indicator of a loose belt; either serpentine or drive belt. The belt maintains tension when the tensioner pulley is fully...
Question
Replacing a harmonic balancer pulley
Hello, thanks for writing in about your 2011 BMW 328i xDrive. If only the pulley was removed, and nothing inside the timing covers, then you should be fine. No worries. If you run into any issues or need assistance with...
Question
I'm having problems with the serpentine belt, is it caused by my power steering hose?
This is quite likely not a power steering pump or a rack and pinion problem, as neither of these would cause the serpentine belt to fall off. The rack and pinion is a part of the power steering system; however,...
Question
How much will it cost to tighten the tension pulley and repair power steering leak?
Hello there, you have several different issues going on with your 1999 Pontiac Bonneville. If the tensioner pulley is loose, it most likely needs replaced as it has become damaged on the inside and tightening it will not fix this....
Question
I have a wobble on the pulley and an oil leak, is it going to need a main bearing?
Hi there. The two symptoms you're describing (the front oil leak and the crankshaft pulley wobble) are two of the best indicators that a professional mechanic should use to diagnose that the issue is the pulley or the seal behind...
Question
What's the best way to get bolts off of the water pump pulley
I will usually try to break the bolts free from the pulley before I remove the belt. Sometimes you can put a little extra tension on the belt by pressing on the tensioner, while using another wrench to break the...
Question
my serpintine belt snaped, i noticed the power steering pulley was bent i re placed it but am not sure if the pulley should spin
If there is no drive belt on the pulley that is on the power steering pump, you should be able to turn the power steering pump pulley freely and easily by hand. If the pulley (shaft) does not turn, that...

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