Stock alternator on a 01 cherokee. No pulley squeek or anything. All. Belts tightened perfectly.
Lately its been "whining" or making a whistle noise upon acceleration. Is this a beginning sign to its demise or am i just overthinking it.
Voltage sometimes drops well below the middle when idling at a redlight or even on park.
Running 2 hella black magic 500s and 2 hella amber rectangle fogs on lower part of Bumper. And lower watt sound system.
Made the noise before lights were on. So....?
Any feedback would be great.
i got the exact same thing right now, ur alt. is going bad and its time to replace or upgrade. i killed mine when weldin my front bumper together, took a week to rebuild, and it does all those symptom after going mudding for a month or longer
I'd loosen the belt and feel the bearing. If there is any problem, change it. Odd though, maybe the belt should be tightened more perfectly. A slipping belt is the only thing I can see that would make it worse wet. Also a bad bearing will normally get hot. That's all I got, God luck...D.
Last edited by DFlintstone; 09-28-2011 at 11:26 PM.
If you have more time than $ you can change the bearing and brushes, test it with a meter. Use to be common. I just swapped mine wen it went bad, wasn't the bearing though. For the time and trouble its usually better to go new. I look for US made for parts.