hello group! seeking opinions: the other day upon starting the engine, screeching noise came from the belt around the alternator. I checked the belt tension.. it seemed fine. the more rpm, the more screech... at the same time this is happening, the alt gauge reads overcharging; by alot. after a few minutes, the screeching went away and the gauge returned to normal. thought all was well until it happened again a few days later. my question is: if it was just a loose belt, why would the alt gauge show overcharging only while this is happening? I was thinking maybe it's the voltage regulator, but a friend thinks that since the alt/belt is screeching, it's the alternator... and if it was the regulator, why would there be screeching noise? I took off the belt to feel for any play on the alt shaft, it was good... as I spin it by hand, the bearings sound good with no resistance or "grinding" feel. I didnt want to mention this until after, but none of this started happening until after I gave someone a jump... we had jumper cables connected correctly... my initial sense is that the jump had nothing to do with it and is only a coincidence... any opinions?
