It only was shakey for a little while.....When I say shakey I mean that it was just little tiny barely noticable jiggles that I felt. I was cruising in 6th gear while the engine was still warming up (almost all the way) and the car started to jiggle or something, like really small tiny vibrations. Then I noticed the lights were flickering, barely noticable but they were. I downshifted to 5th then back to 6th and it just went away, it didn't do it anymore. I also notice that the car shakes a little bit when I turn on the heat. Whats the deal with this?

 

Shakey? Sounds like your car idles rough when a load is applied to the alternator. That would also explain your flickering lights...
why though? I don't know?

 

so...does that mean I need a new alternator? I just got done getting a new battery too.

 

You could go get it tested, but if it only happend once then it shouldn't be that big of a deal.

 

Get a load test on the battery... Might have a cell going bad.... With the radio and A/C off, check the voltage with the car running.. Should be around 13.8~14.2... If the battery is going out, the reading might be alittle higher...