Pontiac Bonneville Harmonic Balancer
Unsettling Blunders Caused by Troublesome Pontiac Bonneville Harmonic Balancers
The harmonic balancer is probably one of the most underrated engine parts. It's a little piece that is attached to the front of the crankshaft. The purpose of the harmonic balancer is to protect the crankshaft from possible damage brought about by the vibrations caused by the pistons. This component works hand in hand with the camshaft sensor to keep engine components operating smoothly and the belts running without any gaffes. Once it goes faulty, the problem can quickly escalate to affect multiple engine parts resulting in multiple failures.
Since the harmonic balancer is responsible for maintaining vibration levels at the minimum through the crankshaft and the rest of the engine, any problem with it will lead to excessive vibrations. At the beginning the vibration won't be noticeable but as it wears away, vibration throughout the engine block will increase exponentially. This excessive vibration will be magnified once the car begins accelerating. Vibrations may upset other components. And that may lead to other engine problems such as leaks in seals and failure of other engine parts such as the A/C compressor, alternator, and pumps.
Aside from being a vibration absorber, the harmonic balancer also acts as a pulley for your vehicle's drive belts. So when it begins to fail, your engine's belts may slip, producing a high-pitched noise. When the belts are put in an awkward position, they will incur damage. In addition to the noise, you may experience an inability of the engine to accelerate efficiently. Consequently, fuel economy falls and the engine begins misfiring or backfiring. Slipped belts can also cause your A/C compressor to stop operating.
Incorrect ignition timing
With the loss of a functioning harmonic balancer, your vehicle's ignition timing will be way off. As mentioned earlier, the harmonic balancer works hand in hand with the camshaft sensor and when one goes bad, the same can be said to the other. Bad ignition timing is due to an erratic signal from the camshaft sensor caused by harmonic balancer's inability to stabilize the part. The condition results in your vehicle being unable to start or the engine to stall uncontrollably.