Question about alternator/serpentine belt

[fastflask95]

So it's been pretty wet in north east Ohio the past week and I noticed my Bonneville started acting a little weird. After driving through a puddle and then coming to a stop, my serpentine belt starts squealing pretty bad and my volts will drop like it's not charging anymore. If I turn the car off and back on, it seems to fix the problem. I still have oil pressure and my temp doesn't seem to go up when it does this. So basically I'm wondering if you guys think my belt is just slipping or is my alternator starting to fail?

[96 SSEi]

if you have no issues in dry, then the puddle caused belt to slip which caused voltage drop.

[nos4blood70]

It's the belt slipping. I had this issue. Even small puddles would make my belt start to slip and drop the voltage and make awkward noises... Haha. Revving it up cleared up the belt and all was well again. Since replacing the belt, no more problems going through puddles.

[imidazol97]

Could be your belt has worn and slips easily when some splashed water hits that side of the engine.
Could be your belt has stretched and has relaxed the spring tensioner, which lets is slip more easily with a little water on it.
Could be your spring tensioner has aged and isn't applying as much pressure to the belt as it should.

Check the index marks on the spring tensioner to see if it's showing that the belt has stretched. A replacement belt may be
needed because of that stretch. If that doesn't being the tensioner within the limit marks, you can try a belt that's slightly shorter--need to figure out how the belt lengths are coded into the part number of the belt but it's doable.