How Do You Know If Your Alternator Pulley Is Bad. If you hear squeaks or sounds are heard or if the bearings feel rough as the alternator is turning the bearings could be bad. Its still worth having it tested but be prepared to replace it.
Typically 126 volts is considered approaching low but your alternator can still work properly at this time. If you have a Check Engine light on connect a code reader to the diagnostic port. If you are still not getting sufficient power then it is likely that the alternators voltage regulator is in need of replacing.
Well cover the symptoms of when an alternator goes bad and how to diagnose a bad one which is really pretty easy.
How do you know if your alternator pulley is bad. If the bearings are in good working order the belt should not move. Also if you notice that the belt or pulley is exceedingly loose where you can turn it more than half of a 360-degree turn then you should let a professional fix this for you as well. How do you know if your alternator pulley is bad.
