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-   -   2.5L, Whining from alternator? (http://www.wranglerforum.com/f210/2-5l-whining-from-alternator-203377.html)

mgh488 12-04-2012 05:52 AM

2.5L, Whining from alternator?
 
Sunday I accidently left the keys in the ignition with the battery on, battery dies. No biggy jump it yesterday. After I jump it the slight whining noise now sounds like a turbo. I checked all over the engine, belts etc. and it seems to be coming from the alternator side. Could it be the alternator. Before there was a slight whistle but now its a heck of alot louder. Any thoughts?

tangofox007 12-04-2012 06:10 AM

A failed alternator diode will cause a whine.

Using the alternator to charge a dead battery sometimes has its consequences.


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