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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.

Related questions

Replace new timing chain but the pulley don't wanna move in circle
Hi there. In many cases, the issue of having the pulley's not align during a timing chain installation are caused by either rushing the job, not properly tightening the attachments, or the pulley itself being damaged. It's very common for...
AC compressor idler pully won't spin
The AC compressor pulley or compressor clutch has a bearing inside of it that enables the pulley to spin without the clutch being engaged. When the air conditioning is turned on inside the vehicle the compressor clutch will engage and...
Engine lost power and EPC light came on
Hello. If the dealership follows the proper rebuild procedures there should be no real cause for concern, however there are a few things you can do to protect yourself from a repeat failure. Primarily, you can choose to have the...
Engine rattled, something fell out, and engine died
Hello. I would go ahead and follow the dealership's recommendation and have the updated water pump installed. I would also recommend having the belts, and any other pulleys, replaced if possible. If the vehicle is still under factory warranty then...
Will I pass my MOT if the dephaser pulley is failing renault megane vvt 1.6
Hello. If your vehicle's dephaser pulley is having issues, it may have a dramatic effect on the engine's emissions levels, which are a part of the MOT test. The MOT test looks at safety, roadworthiness, and exhaust emissions levels. ...
Knocking noise - 2005 Scion xA
Hello. Assemblies such as power steering pumps can often be rebuilt or repaired, but the economics of it are usually only attractive to car enthusiasts or hobbyists. That is, IF there is something wrong with the pump, it is much...
Radiator hose rubbing on pully or a belt
Hey there. If the accident caused the hose to move closer to the pulley, then you may not have much choice but to get the body shop to pull the frame back. If you can move the hose, then you...
Rattling noise upon starting and then louder rattling at idle if load is placed on engine such as A/C
Hi there. Given your mileage and your maintenance of the idler pulley, your problem is likely worn/weak hydraulic lifters (or other valve train wear) or the timing gear set. Starting the engine briefly (less than 30 seconds) without the serpentine...
05 Buick rendezvous power steering pump and pulley
No, these are two different styles of power steering pumps. I would recommend purchasing the correct factory power steering pump for your 2005 Buick Rendezvous. If you need assistance with installation, a certified professional from YourMechanic can come to your...
Change timing belt now or later
Hey there. The timing belt is designed to last a long time and most vehicles recommend replacement between 60,000 to 120,000 miles. If your vehicle recommends a replacement interval of 90,000 miles then you should have it done at or...
Is it my pulley on the power steering pump I need to replace if it's wobbles or the pump it's self
Remove the power steering belt and turn the pump by hand to monitor the shaft to see if it moves around as you turn the pump. If the shaft is not moving and stays straight when you turn the pump...
I have a pulley going bad and I need to know what is happening.
Hi, thanks for writing in. The pulley bearing may be binding the engine and causing the rough idle problem. I recommend replacing the pulley and bearing then recheck the idle to see if running better or needs additional diagnosis. If...
how to bleed to clutch
You will have to fill the reservoir and pump the pedal at least 10 times. If you have to pull the pedal off the floor by hand then pump the pedal using your hand instead of foot. Then holding the...
Radiator hose rubbing on pully or a belt
If the accident caused the hose to move closer to the pulley then you may not have much choice but to get the body shop to pull the frame back. If you can move the hose then you could use...
Fan pully won't line up after doing new head gaskets
Hi there. You need to make sure the crankshaft pulley is put on all the way. The front crank pulley should be very close to the front timing cover. If it is on all the way, then you either have...
Loud metal screeching noise and vibration from pulley
Hello, thanks for writing in. For this particular vehicle it appears that the pulley and harmonic balancer are integrated into one unit. That means replacing either would be to replace both, as they are one part. If you would like...
When start A/C car engine not give power
This is a common sound when idle pulleys and other bearings wear out. When the AC compressor begins to fail or freeze up, this puts an excessive load on the engine causing it to knock due to the heavy load...
Idler pulley for surpentene belt fell off
Hello. If the bolt is gone then it either broke or loosened. If it simply fell out then the bracket is fine. I usually check the bracket hole to make sure that the threads are still there. If the threads...
What other damages occur when the idler pulley freezes?
An idler pulley will never prevent an engine from ever running again. An idler pulley just has a ball bearing inside of it that can dry out over time causing it to get hot. If the issue is not resolved...
Are crankshaft pulleys and harmonic balancers the same thing? I have a 1998 Buick Century custom and it is wobbling and making a loud noise.
Hi, thanks for writing in. On your vehicle, the pulley is actually manufactured into the harmonic balancer. If the pulley is wobbling, it would be best to have a certified mechanic, like those available at, take a look at...

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