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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
I have broken 3 sepentine belts in the last week, i replaced the tensioner pulley as well. What else could be causing my issue?
The pulley has a ball bearing within. The failure mode, or causes of failure, is limited to three possibilities: 1) defective, or worn out, ball bearings; 2) lubrication failure; 3) overloading. To eliminate possibility Nos. 1 and 2 you could...
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
Nissan Sentra 2007 problems with the tension pulley
Hello, thank you for writing in. There are a few things you need to look into. One, have you been buying the same brand of tensioner, and have they been warrantied? You may want to make sure you are getting...
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
My serpentine belt has come off(not broken) my 330xi 2001 BMW, first started the car and sounded really rough then smoke came out
You should check each pulley and tensioner or component driven by the belt to see if one of the components are seized that caused the belt to come off. Have a mechanic like one from YourMechanic to come to you...
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...
Question
I was driving and all of a sudden my car made a loud horrible screeching sound and it continues as long as the engine is running
The noise sounds like you have a belt pulley that is seized. You will need to either start the vehicle and look for the pulley to component that is not turning or will need to remove the serpentine belt and...
Question
I'm a bit confused. You show 1 timing chain, my 2006 CTS has a total of three. Perhaps you're suggesting that the main chain is damaged.
When it comes to replacing the timing chain in your vehicle, it is best to replace all of the timing chains. For your engine, the camshaft timing chains are more likely to stretch more than the main drive timing chain....
Question
I'm having a problem with my 2001 cavalier ever since my idler pulley went my car won't start at all.
Hello, thank you for writing in. If you did not properly route the belt on your pulleys then you may have these and similar issues. If there were issues getting the belt on, or if it was too easy, the...
Question
Hello, I just got a 2001 Montaro Sport and I went to get in tonight and it started squealing. What cold it be?
The noise could be the serpentine belt slipping due to age or the tensioner not holding the belt tight on the pulleys. Also an idler pulley could have a failed bearing causing the noise. Try removing the serpentine belt and...

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