How Long Does an Idler Pulley Last? | YourMechanic Advice

How Long Does an Idler Pulley Last?

The drive belt that is on a car runs nearly all of the major components of the engine. Most of the newer cars on the market have a serpentine belt rather than various V-belts. In order for this belt to remain functional, it will need to have the proper amount of tension and guidance. The idler pulley that is on your car helps to guide the belt where it needs to be, while providing the tension needed to keep it circulating as it should. This belt is used each time the engine is ran and is a vital part of keeping the car running as it should.

The idler pulley is designed to last the lifespan of the car. Usually, this pulley will wear out eventually due to the use that it receives. These pulleys can be made of either metal or plastic and have a pressed bearing in the middle of them to keep it secure on the belt shaft. The sealed bearing design helps to reduce the need for regular lubrication and can provide years and years of service without showing any signs of wear. A bad idler pulley can bring your engine to a grinding halt, which is why it is so important to check it from time to time.

When checking the idler pulley, you will need to look for signs of damage on both the pulley and the bearing that is in the middle of it. In some cases, the covering on the idler pulley bearing will come off and let all of the lubrication out. This will usually lead to the bearing locking up and not allowing the pulley to spin freely.

Here are a few of the things that you may notice when it is time to replace your idler pulley:

  • Screeching and squeaking noises coming from the engine
  • There are engine warning lights on
  • The power steering will not work
  • The engine is starting to overheat on a regular basis

Having a professional to replace the idler pulley on your car is the best way to ensure that the job is done the right way. Attempting to do this type of work on your own will usually lead to a variety of additional repair issues.


Next Step

Schedule Oil Change

The most popular service booked by readers of this article is Oil Change. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. We currently cover over 2,000 cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent Oil Change reviews

Excellent Rating


YourMechanic Oil Change Service

Average Rating

4.9/5

Number of Reviews

20,391

Rating Summary
19,121
827
169
83
191
19,121
827
169
83
191

Fakhar

5 years of experience
7 reviews
Fakhar
5 years of experience
Ford Fusion - Oil Change - Pinole, California
Fakhar was amazing. Definitely acknowledge and saved me money. I definitely recommend him servicing your vehicle!
Volkswagen Golf SportWagen - Oil Change - Albany, California
Fakhar was friendly and efficient, with some helpful tips about preventative maintenance. Would definitely recommend!

Tabitha

16 years of experience
220 reviews
Tabitha
16 years of experience
Acura TL - Oil Change - San Diego, California
Service went exactly as intended. Handed her the key, and she returned it sooner than expected once the work was completed. Thanks for the great work Tabitha!
Kia Spectra - Oil Change - San Diego, California
Tabitha was on time and very thorough. She was a professional answering all my questions. It was a pleasure having Tabitha take care of my car.

Michael

20 years of experience
85 reviews
Michael
20 years of experience
Hyundai Elantra - Oil Change - Riverside, California
Very professional and friendly. Arrived on time. Took the time to explain what was wrong with my car. If my car has issues in the future I am definitely requesting him again!

Wesley

8 years of experience
71 reviews
Wesley
8 years of experience
Honda CR-V - Oil Change - Phoenix, Arizona
Wesley was on time, very friendly and knowledgeable, and did a great job. He completed three services on my CR-V in no time.

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

Related articles

How Belt Tensioners Work
The The drive belt tensioner in your car is a small component that works in conjunction with the serpentine belt to ensure that everything in your engine works as it should. From time to time, the tensioner should be checked...
How Belt Pulleys Work
There 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 crank pulley rotates, transferring motion...
How Does an Engine Idle High and Low?
A common problem that car owners experience is high or low engine idle. A damaged intake gasket, cold air intake, or PCV valve can cause idle issues.

Related questions

Why does my 2003 Chevrolet Tahoe idle rough when in gear

Hello. It sounds like you may have a few things going on here. Most of the time if you are having issues with the vehicle when the fuel is low it is because the fuel pressure is dropping off at...

Low idle stalling out

This suggests that the low idle problem may be related to a faulty MAP sensor since the symptoms you describe point to the low idle issue when the engine is under a load when applying the brakes at idle. The...

High idle and car won't stop

Hello. This sounds like it may be a faulty Mass Air Flow sensor or a throttle arm that could be stuck. It could also be an air leak. A good way to test for leaks is to spray starting fluid...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com