Symptoms of a Bad or Failing Crankshaft Harmonic Balancer

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Cost of Replacing a Bad or Failing Crankshaft Harmonic Balancer

Common signs include engine vibration, misaligned timing marks, and a separated harmonic balancer. Our certified technicians can come to you and diagnose the problem. You will receive a $30 credit towards any follow-up repairs that result from the diagnostic. Following are example prices for Crankshaft Harmonic Balancer Replacement. Click on the button below to get an upfront quote for your car.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2007 Chevrolet Silverado 2500 HD $464 $316.78 $147.00 14% $542.53
2011 Chevrolet Silverado 2500 HD $268 $120.99 $147.00 22% $346.74
2009 Toyota Camry $343 $258.82 $84.00 11% $387.82
2015 Audi Q5 $369 $292.48 $77.00 10% $410.73
2007 Mercedes-Benz R500 $308 $119.26 $189.00 24% $409.51
2012 Audi S5 $632 $435.58 $196.00 14% $736.58
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How to Diagnose a Bad or Failing Crankshaft Harmonic Balancer?

crankshaft harmonic balancer

The crankshaft harmonic balancer is a device connected to the front of an engine’s crankshaft, usually built into the crankshaft pulley. Its purpose is to absorb and reduce harmonic vibrations from the engine as the crankshaft rotates, as harmonic vibrations at high engine speeds can cause accelerated wear and damage to the components. They are usually made of rubber and metal, which easily absorbs any harmonic vibrations that could harm the engine otherwise. Usually a problem with the harmonic balancer will produce a few symptoms that can alert the driver of a potential problem that should be serviced.

1. Engine vibration

One of the first symptoms of a potential problem with the harmonic balancer is engine vibration. The harmonic balancer is specifically designed to absorb harmonic engine vibrations as engine speeds rise. If the harmonic balancer gets too old or fails and can no longer properly absorb the harmonic vibrations, the engine will shake excessively. The shaking will become even more pronounced, and therefore dangerous to the engine at high speeds.

2. Misaligned timing marks

Another symptom of a potential problem with the harmonic balancer is misaligned timing marks. The harmonic balancers found on many vehicles are constructed as two pieces of metal with a rubber layer in between to dampen the vibrations. If the layers separate or slip, the timing marks, which are usually stamped into the front of the pulley, can shift and thus throw off the placement of the timing marks. This will make it difficult, if not impossible to properly time the engine with a timing light.

3. Separated harmonic balancer

Another more serious symptom of a problem with the harmonic balancer is a separated harmonic balancer. If the rubber layer in the harmonic balancer dries or wears out, it can cause the entire harmonic balancer to completely fail by separating. If the harmonic balancer separates, the engine belts will usually come off and the vehicle will be left without engine accessories.

The harmonic balancer is an engine component found on virtually all rotating internal combustion engines and plays an important role in protecting the engine from dangerous harmonic vibrations and potential damage. For this reason, if you suspect that your harmonic balancer may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic. They will be able to determine if the vehicle needs a crankshaft harmonic balancer replacement.

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Recent Crankshaft Harmonic Balancer Replacement reviews

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YourMechanic Crankshaft Harmonic Balancer Replacement Service

Average Rating

4.8/5

Number of Reviews

255

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Aaron

26 years of experience
47 reviews
Aaron
26 years of experience
Aaron was super helpful and was able to complete the job even with some considerable setbacks. Very capable
2007 FORD EXPLORER - CRANKSHAFT HARMONIC BALANCER - TALLAHASSEE, FLORIDA

Richard

10 years of experience
419 reviews
Richard
10 years of experience
It was convenient and Richard was punctual, friendly, and knowledgeable.
1999 CHRYSLER 300M - CRANKSHAFT HARMONIC BALANCER - NORTH LAS VEGAS, NEVADA

David

21 years of experience
17 reviews
David
21 years of experience
Very knowledgeable and courteous. Got the job done on time. Showed up early. Very good!
2001 MAZDA TRIBUTE - CRANKSHAFT HARMONIC BALANCER REPLACEMENT - ORANGEVALE, CALIFORNIA

Curtis

27 years of experience
104 reviews
Curtis
27 years of experience
Got the job done quickly and he was extremely professional!
1995 FORD MUSTANG - CRANKSHAFT HARMONIC BALANCER - COLUMBIA, SOUTH CAROLINA

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