i think so. mine went, i replaced the bearings in it, still the same, got another one. so much better, bit sick of the noise. yeah the noise it really irritating. did you get noise when you bought a new one? or you have the noise when you replaced the bearings? no it was noisy when i turned the car off, then restarted it 2 minutes later.. was weird, diagnosed as the alternator, i removed it, pulled it apart and replaced the bearings, put it back together still noisy, so i got a 2nd hand alternator, fitted it, noise was gone..