anyone else have problems wth fender jazz?

Have it set up properly, it should do the trick. Also with the cheaper Fender bridges, sometimes the little screws in the saddle slip. If they aren't level, one may rattle... at least that's what happened to mine. A quick set-up fixed it.

 

Check that the tuning machine is tight to the headstock and that the string is properly wound down the post so you have a good break angle across the nut.

 

This is a common problem with Fenders and other basses with a straight headstock. Most likely, it is the A string not being properly seated in the nut. A quick fix is to put some paper or scotch tape under the A string in the nut, experimenting until the buzzing/rattling goes away.

But as jandbabyj said, a good setup is the permanent cure.

 

<Also with the cheaper Fender bridges, sometimes the little screws in the saddle slip. If they aren't level, one may rattle... at least that's what happened to mine. >
Ya know, I read about the saddles being cheaper in the MIM. I thought to myself, what a load of crap. Well, I picked up a MIM jazz F/L and was going to replace the bridge W/ a good one I picked up from stew-mac. Unfortunately the screw holes didn't line up, so I figured Oh well, I'll just live W/ it. At a rehearsal one nite my G string is Mwah-ing all on it's own. Turns out those little screws actually did back off while I was playing and lowered itself so it was almost touching the board. So I readjusted the screws, and added a touch of Loc-tite. Haven't had a problem since.

 

I had the same problem with my E-string on my American Deluxe V Jazz when I first purchased it. The string was not properly seated in its slot in the nut. I fixed the rattling by adding some tape to give the string a tighter fit in the nut as Embellisher describe. Eventually, I started using a larger guage E-string so I would not have to mess with the tape.

 

Well I had the same problem with my piece of **** squier bass and I installed a Badass II bridge and its fixed.