Recently replaced the alternator, now have a roarin sound, like big tires on the road. So now do I need to replace idler pulley bearing on 2002 chevy silverado? Thx, kathy j
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Saturday, January 22nd, 2011 AT 4:54 PM
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JACOBANDNICKOLAS
MECHANIC
108,014 POSTS
Kathy:
If the sound wasn't there before you replaced the alt, chances are you got a bad alternator. Remove the belt and spin the pullies to see if you can duplicate the noise.