I wonder if someone else has the same problem as I have, once in a while my volt gauge goes all the way to 19 and the check gauges light starts to blink, once I turn off the jeep every thing goes to normal.
I went to discount ant I asked them to check the amp or Volt regulator in the alternator and the tester says that every thing it's ok.
And like I said it has being only 2 times . Everything works ok.
any advice???
Btw I have a 00' Sahara 5spd and I recently change the stereo.

Thanks.

did you put a high power stereo in, i have about 2,600 watts running in my system and i needed to replace the battery and the alternator. if not than i have no idea.

First step should be to clean and tighten your battery connections. If the alternator doesn't have a good clean tight connection to and from the battery to tell it the battery's condition, all kinds of shenanigans can occur.

If that doesn't help, next check, clean, and tighten all the other major ground cable connectors where they are bolted to the chassis and tub.

No, just a SONY CD/MP3 player deck 54W x4, everything it is the same factory speakers no amp .It was just the deck.

Thanks I wil try this later @ home. but anyway so far everything looks clean.

Bad alternator or battery it self? 19 volts can cause a lot of damage specifically ecu damage..