1995 Toyota Corolla When I started my car today for the 5th or 6th time, I noticed a humming noise. Nothing else seemed to be wrong. I popped the hood and the only thing I could find worrisome is the crank shaft pulley seems to be wobbling. I can't seem to move it when the engine is off. Could it possibly be the harmonic balancer?
Maybe, you would have to remove the belts and then take a look at all the pulleys, it could be a pulley or a bad waterpump, or even something in the timing belt, like a timing belt pulley or tensioner pulley or waterpump,the best way to find out is to remove all the belts and then start the motor and listen for the noise, if the noise is still there with the belts removed then its something in the timing belt, but is the noise goes away then its something with the belts a pulley or a alternator, you would have to inspect all pulley and the acc, hope this helps,
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