What kind of noise does a bad harmonic balancer make? A faulty balancer can result in a knocking, rattling, or squeaking sound that corresponds with engine speed. So yeah, a wobble is not normal and the balancer needs to be replaced.Ĭan a bad harmonic balancer make a knocking noise? On another pretty new Buick it caused a leak from the front seal. On one of mine it sheared the crank sensor and the car was dead. The balancer is packed with rubber that comes loose over time and causes a wobble. The cost of replacing the harmonic balancer varies mainly due to the type and model of the vehicle and the type and brand of parts used. How much is a harmonic balancer to replace?Ĭost of Harmonic Balancer Replacement On average for most vehicles, it can cost about $200 to replace a harmonic balancer. Harmonic balancers do have many names, though, such as damper, crankshaft pulley and crankshaft balancer, among others. Is crankshaft pulley same as harmonic balancer?Ī harmonic balancer is a front end accessory drive component that is connected to the crankshaft of an engine. The harmonic balancer’s job is to dampen vibrations applied to the crankshaft. How do I know if my harmonic balancer needs replacing?īad Harmonic Balancer: Signs to Watch Out ForĮngine Vibrations. This is a good example – because it’s got such a massive piece of rubber – you can see the rubber literally tears apart into two sections. And certain engines they might only last 50,000 miles or less than 10 years. On certain engines, sometimes these last forever, last the life of the engine. If it wobbles, the harmonic balancer is bad. Take a flashlight and shine it directly onto the balancer to see if it goes in and out while rotating.
Start your engine and check the harmonic balancer to see if it wobbles while the engine is running. It can also tear up drive belts and possibly come apart posing a danger to people and property. The bouncing crankshaft will wear on the main bearings. It’s not okay to drive with a bad harmonic balancer. You are watching: Bad harmonic balancer make knocking noiseĬan you drive a car with a bad harmonic balancer? The shaking will become even more pronounced, and therefore dangerous to the engine at high speeds. If the harmonic balancer gets too old or fails and can no longer properly absorb the harmonic vibrations, the engine will shake excessively. What problems can a bad harmonic balancer cause?
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