have a 99 ls automatic that I think have a electrical problems. One time I was driving and my electrical system just got zap and everything was turn off, I couldn't even turn on my emergency lights! I thought it was the battery so I replace it and stil within a couple of days I feel I have to jump start my car. IS THERE A WAY TO CHECK YOUR ELECTRICAL SYSTEM? SHOULD I CHECK A CERTAIN AREA. PLUS I AM GETTING LOUSY GAS MILEAGE I THINK MY 02 SENSOR GOT ZAP TOO. any informations would help thanks...

 

First check the earths, if they come off or are poor then it will put a lot of load on the alternator which will kill it and you would lose all power.
How was your fuel millage before the incident? Bad fuel millage is a symptom of poor earths.

Not enought spark, poor or no boom.
Poor or no boom, No go.
No go, need to put foot down more.
Foot down more, more gas usage.