There are generally two signs that the alternator is going bad.
First is the noise. A new noise will begin to be heard. Something like a whining when the car is accelerating.
Second is the smell. You may smell burning from the engine department.
Open the hood and look for the white engine information sticker. It will tell you what size engine you have in liters.
Look on manufacture tag on drivers side door jam it will tell you size of tire
This vehicle comes with 3 different engines. You have neglected to tell us which.
1st you would need to tell more info about the vehicles engine, ie... 4cyl, V6, ect...
The problem is most likely the clockspring. Go to this link it will tell you what to do. http://www.automotive.com/1997/49/plymouth/voyager/recalls/38659.html
the battery will not charge properly
Perhaps thids might help... http://wiki.answers.com/Q/How_do_you_tell_if_the_battery_or_the_alternator_is_bad
The 3.3L says "3.3L" on the upper intake manifold. Also, the 3.0L has a distributor, while the 3.3L doesn't.
If your vehicle has a voltometer, the power will be low. If not, you can usually tell by dimming of the headlights or other electrical systems
You can take it down to a shop and get it tested, but if you can not afford that, you can take the negative battery cable off of the battery while the vehicle is running. If the vehicle dies, you may have a bad alternator.
Refers to same thing
There should be a transmission fluid dipstick that should tell you how much you have and a mark telling how much you should have. DO NOT overfill as you can blow out your seals. I would add a pint at a time and check how much you have. (IANAMechanic)