my passenger door handle thingy is loose
shakes a little like its starting to come off
but still works
why is this so?
how can i fix this?
what should i do?

 

You can prbably replace the part...try mazdaformance

 

cant i do something about it instead of replacing it?

 

Try this. On the inside of the door(behind the door handle), there is a plastic cover. Take that cover off. It should just pop off. There will be two screws in there. Try tightening them. There is a good chance that that's your problem.
Jim

 

which part? there are a lot of parts on the handle thingy.

Download the shop manual. It should help you. At least you can let us know which thingy you taking about.
http://www.iluvmyrx7.com/3rd_gen_manuals.htm

 

the outermost cover.. the part which is very easy to scratch up