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
2005 Hummer H2 $247 $120.99 $126.00 21% $314.49
2011 Hyundai Accent $233 $163.48 $70.00 13% $270.98
2013 Chevrolet Malibu $134 $63.69 $70.00 21% $171.19
2011 Audi A6 Quattro $564 $346.92 $217.00 17% $680.17
2014 BMW 650i xDrive Gran Coupe $775 $670.06 $105.00 6% $831.31
2005 Porsche 911 $758 $463.65 $294.00 17% $915.15
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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

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Number of Reviews

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Brandon

17 years of experience
570 reviews
Brandon
17 years of experience
Brandon was very professional and prompt. He arrived on time and fixed my car under the estimated time. Great service!!
2006 HYUNDAI SONATA - CRANKSHAFT HARMONIC BALANCER - ALTAMONTE SPRINGS, FLORIDA

Fabrice

17 years of experience
108 reviews
Fabrice
17 years of experience
Professional
2005 HONDA ODYSSEY - CRANKSHAFT HARMONIC BALANCER - ORLANDO, FLORIDA

Jamahl

17 years of experience
703 reviews
Jamahl
17 years of experience
Very good mechanic and very pleasant to deal with. Did a great job.
1997 CADILLAC DEVILLE - CRANKSHAFT HARMONIC BALANCER - OCOEE, FLORIDA

Cognac

17 years of experience
68 reviews
Cognac
17 years of experience
On time very knowledgeable very professional and courteous will use him again keep up the great work and also saved me money thanks again
2003 FORD FOCUS - CRANKSHAFT HARMONIC BALANCER - MEMPHIS, TENNESSEE

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