my alternator has been making dry noise since about a year ago. i talked to a dealer and they told me that it is about a time to change it. do you guys think that i need to change it soon or it should be fine.

I would not -the noise itself is not a big problem, if the charging system works fine. Also, it may be something else too-PS pump, drive belt or timing belt tensioners, AC clutch or water pump.
I bet the dealer charges no less then $400.00 for the job, may be more.

I would forgo the rebuild and put in a Bosch rebuilt unit. Fairly economical on the internet, 2 year warranty typically. Changing out the Alt in my 93 was a big job. Would not want to get the whole thing back together only to find out that the alt would need to be removed again in a short period of time.

My 93 had a pretty big groove cut in the armature where the brushes rode. I would have needed to replace that part any way had I tried to have our local shop rebuild the unit. I was glad to go with the Bosch rebuild. Right around $190 on the net if I remember.

Cannot say but you should be able to have it rebuilt for less than the replacement cost. Have a knowledgeable independent specialist look at it.

HTH

R