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Can I replace serpentine belt by myself?

Yes, you can typically replace a serpentine belt on your vehicle by yourself, as long as you have the right tools and follow the proper steps. Replacing a serpentine belt is a relatively straightforward maintenance task that many car owners can handle without the need for professional assistance.


What is a Serpentine Belt?


A serpentine belt, also known as a drive belt, is a single, continuous belt that powers multiple components in your vehicle's engine, such as the alternator, water pump, power steering pump, and air conditioning compressor. The belt winds its way around these various pulleys in a serpentine pattern, hence the name "serpentine belt." Over time, the belt can become worn, cracked, or loose, necessitating replacement to ensure proper functioning of these critical engine systems.


Steps to Replace a Serpentine Belt



  • Gather the necessary tools: You'll need a serpentine belt, a belt tensioner tool, and a socket wrench set.

  • Locate the serpentine belt: The belt is typically located at the front of the engine, running between various pulleys.

  • Release the belt tensioner: Use the belt tensioner tool to relieve the tension on the belt, allowing you to remove it.

  • Remove the old belt: Carefully remove the old serpentine belt, taking note of the routing path to help guide the installation of the new one.

  • Install the new belt: Carefully route the new serpentine belt around the pulleys, following the same path as the old belt.

  • Adjust the belt tension: Use the belt tensioner tool to properly tension the new belt, ensuring it is not too loose or too tight.

  • Start the engine and check for proper operation: Start the engine and observe the new belt to ensure it is running smoothly and all the components it powers are functioning correctly.


By following these steps, you can successfully replace a serpentine belt on your vehicle without the need for professional assistance. However, if you are unsure about any part of the process or encounter any difficulties, it's always best to consult a qualified mechanic for guidance.

What size wrench do I need to replace a serpentine belt?


Use a 17mm wrench to pull the tension back, then tighten the 13mm bolt which locks the slotted portion in the bracket. Remove the belt, this can be tricky if you are working with an inline drivetrain that is equipped with a mechanical fan.



Is it hard to replace your own serpentine belt?


Serpentine belts are very easy to replace and are fairly inexpensive. Only one tool is needed, and you shouldn't need to remove any parts from the engine. (Edit: some cars may require the removal of a plastic engine cover.) Do not drive your car with a broken serpentine belt.



Do you need a special tool to replace serpentine belt?


What tools do I need to replace a serpentine belt? For most DIYers, you can do it with a breaker bar or belt tension tool, a ratchet and socket set, safety goggles and gloves, and your new belt.



Is it OK to drive without a serpentine belt?


Technically, you can drive your vehicle - but, ideally, to the nearest auto repair shop or back home to fix the issue yourself. Once you discover that your serpentine belt is broken, you should make plans to find another means of transportation.



How much does a mechanic charge to change a serpentine belt?


Of course, like any other rubber component, your car's serpentine belt can eventually wear out. When that happens, you'll want to replace the belt right away to avoid a breakdown and additional repairs. Expect to pay somewhere between $150 and $250 if you want a professional to replace your serpentine belt.



What are the signs of a bad serpentine belt?


Bad serpentine belt symptoms

  • Squeaking, squealing or chirping sound from under the hood of the car.
  • Check engine light or battery light is illuminated on your dashboard.
  • A/C isn't working.
  • Power steering isn't working.
  • The engine's temperature is high or overheating.
  • Smell of burnt rubber.



How long does it take to change a serpentine belt?


Plus, replacement is relatively easy, and if you're wondering how long does serpentine belt service take, it's less than an hour for most vehicles.



Will AAA replace a serpentine belt?


We can check all the belts to make sure they're in proper working order. If you do need a replacement, we can install it for you immediately.



What are the symptoms of a bad serpentine belt?


Bad serpentine belt symptoms

  • Squeaking, squealing or chirping sound from under the hood of the car.
  • Check engine light or battery light is illuminated on your dashboard.
  • A/C isn't working.
  • Power steering isn't working.
  • The engine's temperature is high or overheating.
  • Smell of burnt rubber.



Does your car run better with a new serpentine belt?


A serpentine belt is an essential component of your car but is not made to last forever. A failing serpentine belt affects your vehicle's performance and leads to issues like overheating and alternator problems. Read on to learn more about how a serpentine belt works and when it should be replaced.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.