Check for a gas leak maybe on the belt and check the belt for alignment.
diagram for serpintine belt 92 dynastry
belt diagram 1992 dodge Dakota with 318
Could be the belt in the tire, that can cause it to squeek, also it could be the wheel bearing or the C/V Joint.
http://autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/0b/a2/88/0900823d800ba288.jsp
3.0 has a timing belt behind plastic covers that are behind the accessories E.G. Alt. & PS
http://autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/0b/a2/88/0900823d800ba288.jsp#hd1-1-3
Your belt is either to big or just plain worn out.
Its not neccissarry, but you can if you want to, as long as the belt looks and is in good shape then you dont need to.
It is inside the engine, driven by the timing belt.
I have a 92 dodge dynasty and I went to the salvage yard and drew a picture of one, went home and put it on. Works great now. When I tried to get a picture of the belt pattern from the auto parts store, it didn't match up with the way the pulleys were on my car.
Try this site! Hope it helps you!http://www.mvreader.com/multiview/dayco/catalogSearch.php?autoCatalogSearch=1&make=DODGE&model=DYNASTY&year=1993&year_from=&year_to=&engine=BAR&l=
Answerlook here for the 3.3 engine.http://ww2.justanswer.com/uploads/molurch/2006-12-26_125820_3.3DodgeBelt.jpg