These may seem like stupid questions, but I am a novice and really want to learn...
1. What is the difference between the 22re and the 3.0VZE?
2. What is a differential? (I think it's something to do with gearing and turning, but I'm not sure what...
3. My check engine light is on, and my neighbor told me that I have a misfiring cylinder based off what he could hear...Is this even possible?

Thanks! If I have any other questions I'll update this post.

*P.S. I'm sorry for the basic questions but I really have no idea where to begin...

 

1. 22re is a 4 cylinder, 3vze is a v6.
2. http://en.wikipedia.org/wiki/Differential_gear#Overview
3. It could be any number of things. And yes, it could be possible.

For really basic questions, the best place to start is Google.