belts behaving badly

bucklahoo

New member
90 yj 2.5L pretty much stock

my belts are horribly squeeking.
but they only really squeek when my headlights are on and i come to a stop. upon stopping my voltmeter drops to 8-9 the lights dim a little and the belt roar. when i start to move forward they squeel then go back to normal. if i turn the lights off while it squeeks it'll stop squeeking.

they don't squeek in the day with the lights off though. please explain.
 

Sounds like maybe the bearing in the alternator is going bad causing it not to turn free, making the belt noise. Just a guess.
 
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