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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
Crankshaft pulley not turning
The crankshaft damper has a broken rubber insulator and no longer turns the outside of the pulley moving the serpentine belt. The accessories are not being turned causing the loss of power steering, charging and any other accessory that is...
Question
Noise coming from power steering belt area.
The serpentine belt should be removed and then the engine run momentarily to see if the noise goes away. If the noise goes away, obviously the cause is one or more faulty rotating elements in the belt circuit. A mechanic...
Question
What is the cost to replace the tensioner pulley, idler pulley, and the drive belt?
Billing question sent to CS for the cost to replace the tensioner, pulleys, and the drive belts.
Question
New timing belt broke?
Timing belts are rubber based products. Rubber deteriorates with age and that deterioration can be accelerated by storage conditions. I have seen belts vended that are 6 years old or older, which is well past a reasonable interval. Consequently, if...
Question
The car through a serpentine belt
If the coolant leak still exists, the recommended service would be a leak diagnostic(https://www.yourmechanic.com/services/coolant-is-leaking-inspection). It is possible that a seized water pump bearing can throw the belt but all other causes, including bearing roughness in additional pulleys, have to be...
Question
What could happen by driving without a bolt on a pulley?
The consequences in regard to the pulley depend on which pulley was vandalized (there are quite a few on a engine). If it was the crank pulley, such could fall off (eventually) and if it does cause a fair amount...
Question
serpentine belt keeps breaking
The belt is either too tight or too loose, pulleys (including that on the harmonic balancer), the tensioner, and accessories are out of plane, and/or the belt driven accessories are binding, that is they are not turning freely because the...
Question
Broke water pump studs
It depends on how much access you have to the broken bolt or stud. It also depends on how much of the broken section sticks out because there are tools that can grasp the broken part and extract it. Of...
Question
Sometimes squeals on acceleration but used to be bad on start-ups.
Check the drive belt to the vehicle and see if its cracked or glazed. A cracked or glazed drive belt will squeal when under a load. Also, check the pulleys and see if the bearings are going out. A drive...
Question
Hey what is the part behind the idler pulley on a 2006 Honda Civic? There is a big crack and I want to know what part it is.
Hi there. Seems to be the tensioner to the idler pulley is cracked. Remove the drive belt from the engine and check the pulley tensioner and see if it can move around. I recommend seeking out a professional, such as...
Question
Popping sound while idling.
Hi there. One or more of the drive belt pulleys may be bent causing the engine to have erratic rpm's when at idle and causing the engine to stall out at times. Open the hood with the engine running and...
Question
Tensioner Pulley Removal 2003 Dodge Neon
Hi - yes, it should be possible to only remove the serpentine belt idler pulley. After carefully releasing the tensioner, and removing the serpentine belt, there is a plastic cap at the center of the pulley. Pop this cap off,...
Question
Annoying loud noise when starting the car.
The noise is the drive belt slipping on the pulleys on the engine. Check the tensioner to see if it feels loose and not tight. If the tensioner is loose, then I recommend replacing it. Also if the belt is...
Question
Rat under Hood.
Of course, you want to be sure that the noise is really from the serpentine belt and/or connected rotating elements. If you simply take all of the belt driven accessories out of the picture by removing the drive belt and...
Question
pulley fell off
For the 1995 G-20, all of the brackets in the location you describe are listed in GM parts catalogs. Using those catalogs, and your description, I narrowed it down to 5 possible GM part numbers: 10187650, 10179211, 10163742, 10163742, 10028767....
Question
Serpentine adjustment pulley
The first thing to check is whether all replaced parts (belt, idler, tensioner, etc.) are actually the correct parts for your vehicle. It is not unusual to be given the wrong parts, for there to be cataloging errors and so...
Question
cannot figure out how to use the tensioner pulley for serpentine belt removal
Hello, and thank you for writing in. We currently do not have videos available to share with you, however we can do our best to walk you through the process and how the pulley works. What you see when you...
Question
The serpentine belt is not lining up.
The pulleys may not be lined up in the same plane. Look at the harmonic balancer and crank pulley in particular. The rubber bond in the balancer may have failed thus causing misalignment of the pulleys relative to the other...
Question
belt broke serpentine
If your car has a substantial amount of mileage, it's not unusual for a serpentine belt to break and to need a new tensioner (the bearing on the tensioner wears out). If the harmonic balancer/crankshaft pulley is out of position...
Question
My belt and pulley fell off. What would cause this? Also, there is Green fluid leaking from front driver side.
The idler pulley or tensioner pulley may have seized up causing the pulley and belt to come off the engine. When these parts come off with the engine running, depending on how fast the engine was running (how high the...

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