Jeep crankshaft pulley replacement, made easy

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Our expert insights into crankshaft pulley replacement

What does a crankshaft pulley do?

The crankshaft pulley is mounted on the end of the crankshaft. Its purpose is to transmit mechanical power and torque through the pulley system to turn the drive belts that operate the engine accessories (alternator, air conditioning compressor, etc.).

What are the symptoms of a bad crankshaft pulley?

Below are the top three symptoms that could indicate you need to replace your crankshaft pulley:

  • Engine vibrations

  • Alternator failure - flickering headlights, car struggles to start

  • Rough engine idle

What happens when we do a crankshaft pulley replacement on your car?

Our certified mechanics will:

  • Check the condition of the crankshaft pulley.

  • If necessary, they will replace the crankshaft pulley.

  • Advise if any other related parts need to be replaced.

  • Test drive the car to check everything has been fitted correctly.

Daniel, from LondonDaniel, from London

Hey Fixter, what are the signs of a failing crankshaft pulley?

You may notice that your engine is vibrating more than usual, your car is rough when idle, struggles to start or stalls frequently.

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Want to learn more about Jeep crankshaft pulley replacement?

What does a crankshaft pulley do?

The crankshaft pulley is positioned on the end of the crankshaft. It transmits mechanical power and torque through the pulley system which then operates the engine's accessories (alternator, air conditioning compressor, etc.) through the use of a rubber belt or system of belts.

The crankshaft pulley is also essential in ensuring other engine components operate in unison to allow the vehicle to run smoothly. Doubling up as an internal dampener, crankshaft pulleys also reduce the risk of damage to certain engine components as they reduce the vibrations caused as the engine runs.

The car crankshaft pulley may seem like a minor part in a vehicle, but it is actually a very important part and is vital in the smooth operation of a healthy car.

Jeep

Jeep is a brand of American automobiles, established over 70 years ago in 1943, and has been owned by the Italian-American corporation Fiat Chrysler Automobiles since 1987.

Jeep’s current range consists solely of SUV and off-road vehicles, but there’s plenty available for every eventuality. Whether you need a car for an out-and-out adventure or a luxury family vehicle, Jeep has something for just about anyone.

There were 83k Jeep vehicles on the UK roads by the end of 2018, a number that could show signs of growth with the marque’s plans to introduce more small and large SUVs and fully electric models to the range.

Crossing streams or navigating the school run—you can do it all in a Jeep

With a 5-year warranty and a selection of body styles and sizes, Jeep has SUVs and 4x4s that traverse the full range. With a starting price of under £20k for the compact Renegade, all the way up the ranks to the £90k Grand Cherokee Trackhawk, Jeep will get you where you’re going, however you choose to do it.

Be part of the Jeep family at Camp Jeep

For Jeep owners across Europe, and in some of the most stunning and challenging locations available, Camp Jeep gives their drivers an event of their own to celebrate the bond between the brand and its fans. With a packed programme of off-road test-driving, and theory and practical courses held by the Jeep Academy, the camp is backed up with additional social activities including hot air balloon flights, concerts and family fun and games to provide the perfect atmosphere.

You don’t get that kind of inclusion from any of the typical mainstream brands.

How often should a crankshaft pulley need replacing?

A crankshaft pulley can last the lifetime of your car without failing, however unexpected issues can occur which may lead to your pulley needing to be replaced. In general, crankshaft pulleys are not part of regular maintenance so shouldn’t have to be repaired or replaced often

The car crankshaft pulley may seem like a minor part in a vehicle, but it is actually a very important component and is vital in the smooth operation of a healthy car. Therefore if you experience any of the symptoms above you should have your car inspected by a mechanic.

What happens during a crankshaft pulley repair?

Our certified mechanics will:

  • Check the condition of the crankshaft pulley.

  • If necessary, they will replace the crankshaft pulley.

  • Advise if any other related parts need to be replaced.

  • Test drive the car to check everything has been fitted correctly.

What causes a crankshaft pulley to break?

When an engine has a bearing failure, this can cause issues for the crankshaft and the pulley tension. Similarly, if the belt tension is too tight or the auxiliary equipment has failed the pulley will also fail.

Most crankshaft pulleys also have a rubber element that is prone to deterioration as it is exposed to continuously changing conditions. If this wears out a replacement pulley will need to be fitted.

What are the symptoms of a failing crankshaft pulley?

Usually, there a few signs you can look for:

  • Engine vibrations

  • Alternator failure - flickering headlights, car struggles to start

  • Rough engine idle

  • Difficulty moving the steering wheel

  • Difficulty changing gears due to gearbox damage

How often should you replace your crankshaft pulley?

Generally a crankshaft pulley should last the lifetime of the vehicle, however wear and tear does occur so occasionally one may need to be replaced.

What happens during a crankshaft pulley repair?

Our certified mechanics will:

  • Check the condition of the crankshaft pulley.

  • If necessary, they will replace the crankshaft pulley.

  • Advise if any other related parts need to be replaced.

  • Test drive the car to check everything has been fitted correctly.

What is the average life of a crankshaft pulley?

A crankshaft pulley can last the lifetime of your car without failing, however unexpected issues can occur which may lead to your pulley needing to be replaced. In general, crankshaft pulleys are not part of regular maintenance so shouldn’t cause you too many issues.

Can you drive with a broken crankshaft pulley?

You should avoid driving with a failing crankshaft pulley as it can cause serious and expensive damage to your engine. If the pulley breaks and the engine continues to run, serious damage could be done to the crankshaft, which would be a very extensive and costly repair. Other belts and components riding on the pulley could also break or become damaged.

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