Yet, a battery warning light should come on the dashboard to tell you there’s no charge occurring. You may end up with a dead car battery as a result of the failure. Therefore, power will no longer be supplied to the battery or the accessories. When the crankshaft pulley fails and there’s a problem with the serpentine belt, the alternator won’t be able to run. It also provides power to the accessories. The car alternator is responsible for charging the battery while the engine is running. It’s also possible that the crankshaft position sensor is not reading the engine speed properly from the bad crankshaft pulley and that can therefore result in irregular engine idle. You may notice a rough idle as a result of the failure. When the crankshaft pulley fails, everything gets out of balance. Irregular Engine IdleĮven with engine running as it should, the crankshaft pulley endures a lot of tension. Of course, you should have noticed some battery issues before it gets to this. This can also come because of a dead car battery because the alternator failed to work. If the crankshaft position sensor can’t read the engine speed from the crankshaft pulley’s teeth, you may not be able to start the engine. This problem goes hand-in-hand with the last one. Hopefully, you take action before it gets this far. For example, there would need to be a decent amount of vibration occurring for the serpentine belt to jump in the first place. Some vehicles read the engine speed from the crankshaft pulley teeth with a crankshaft position sensor, and if this pulley is bad, the engine will stall.īefore this happens, you should notice some of the other symptoms. When the crankshaft pulley no longer spins the serpentine belt, you’ll have trouble keeping the motor going. It’s not a common occurrence to deal with a stalling engine when the crankshaft pulley goes, but it can happen. Continuing to let the engine vibrate like this only leads to further damage. You may notice this problem more when the engine revs up higher. If the pulley is bad, the engine vibrations naturally increase because there’s nothing absorbing them. One way that this is accomplished is through the harmonic balancer that’s attached to the crankshaft pulley. The car engine vibrates excessively from all of the movement occurring inside, but designers have worked hard to find ways that minimize the shaking. Some of these symptoms are more common than others, but all of them are possible. It can also keep the battery from charging, cause a loss of power steering, overheat the engine and ultimately lead to transmission or internal engine damage. When the crankshaft pulley goes bad, it leads to engine vibration, a stalling engine, a car that won’t start and an irregular engine idle. Conclusion Symptoms Of A Bad Crankshaft Pulley
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