Skip the auto shop - Our mechanics make house calls

How Long Does a Crankshaft Harmonic Balancer Last?

harmonic balancer

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 serves as a pulley for the drive belts. Without the crankshaft harmonic balancer, your vehicle would not run smoothly and it would have constant problems, including not starting. There are two elements of the crankshaft harmonic balancer. They include an energy and a mass dissipating element. Together, these work to balance out and get rid of the vibrations from the engine.

Each time the cylinders in the engine fire, torque is applied to the crankshaft. At certain speeds, the torque is in sync with the cylinders, which creates resonance. This resonance causes too much stress for the crankshaft. If this stress continues, the crankshaft will break and your vehicle will be inoperable. To balance the vibrations and resonance, the mass element resists the acceleration of the vibrations and the energy element absorbs them.

Over time, the crankshaft harmonic balancer can go bad from constant exposure to chemicals, the elements, or from old age. If this happens, the crankshaft may develop cracks and ultimately fail. As soon as you notice any of the symptoms that your crankshaft harmonic balancer is going bad, it is important to have a professional mechanic replace the damaged crankshaft harmonic balancer right away. Ignoring this problem will only make it worse and cause extensive repairs.

Since this part can wear over time, it is important that you recognize the symptoms so you can have your crankshaft harmonic balancer replaced before problems escalate.

Signs that your crankshaft harmonic balancer needs to be replaced include:

  • The engine is loud and you feel vibrations coming from your engine
  • The pulley belt may slip causing your vehicle to backfire or misfire
  • The vehicle’s ignition timing will be off
  • The vehicle will not start at all

It is important to have your balancer replaced as soon as you notice a problem, otherwise other parts of your car can become damaged and your vehicle will be inoperable.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

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

More related articles

P0222 OBD-II Trouble Code: Throttle/Pedal Position Switch/Sensor B Circuit Low Input
P0222 code definition Throttle/Pedal Position Switch/Sensor B Circuit Low Input What the P0222 code means The manufacturer specifies a range of acceptable voltage to be produced from the throttle position...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2159 OBD-II Trouble Code: Vehicle Speed Sensor B Range/Performance
Diagnostic Trouble Code (DTC): P2159 P2159 code definition Vehicle Speed Sensor B Range/Performance Related Trouble Codes: P2158: Vehicle Speed Sensor B P2160: Vehicle Speed Sensor B Circuit Low P2161:...


Related questions

Q: 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...

Q: 2001 Chevy Blazer distributor install.. it is at top dead center and the rotor lines up with the 6 but is not seated all the way.

If you are using the marks on the harmonic balancer to find TDC, occasionally the balancer will have shifted (the rubber bond breaks) causing the timing mark to be some degrees off. Consequently, the crankshaft is not really at TDC...

Q: 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...