Tention pully is a smooth pully.the belt slips off constantly ive notice the belt sliding from the right of the pully to the left,when the belt is put back on. then eventually again falling off.

this is farely easy to figure out from looking at your pullies. ribbed pullies normaly take the ribbed side of the belt and smooth pullies take the smooth side of the belt. i would start at the tentioner pully (which is smooth) the put the inside of the belt around the 2 nearest pullies and weave it alternating in and out of the rest of the pullies.

I had a similar problem that had me checking all the same things that you are, my charging gauge was reading low witch is why I thought it was slipping belt, but it turned out that dodge alternators don't always just stop working they can die slow, mine would say it was only charging halfway, then I would shut it off and start it back up and it would be charging fine for an hour and then drop down again, drove me nuts for a week then I changed the alternator and have not had a problem since.

ok I do not know what the cofigure is on your jeep but let me explain how it works and then you may be able to put it on. First look at the pulleys and see witch ones are smooth and witch ones have lines. smooth pulleys match to the smooth side of the belt ridgid side matches with ridgid side of belt. next I will tell you a rule to most serentine belts. Your crankshaft pully is the main drive so the belt will rap around almost 3/4ths the way around the pulley. All driven pulleys witch are the ones the run the water pump, altenator, compresor, and power steering rap around 3/5ths around the pulleys then you have the tentioner witch will apply pressure down on the belt so make shure the belt is under the pressure side. You can put a 3/8th ratchet in the tentioner to move it. if you still have pulleys that I have not covered they are their to complete the right amount of rap on the driven pulleys. The main thing to look at is if its smooth then put the smooth side of the belt on that pulley. If this did not help just coment back and I can get the book out tommorrow when I go to the shop and email you a copy of the diagram

The belt tentioner pully is the idler pully in the serpentine belt system...
You need a long wrnch (11/16??) to fit the pullys center bolt...
Turn the bolt to the right ( righty tighty) and the tentioner will losten its tention on the belt enough to remove the belt...
Imediately replace the belt ... so its routing is not forgotten by time or distraction...
If there is still a sticker on the upper radiator support reflecting the serpintine belt routing.. then you are in a better spot to be doing this ... with distractions...

This is one of theose questions that I had to research over and over again for the same problem I had. I had a 1998 voyager and a 1998 caravan ,same van right? The voyagers belts would always come off when I hit a puddle of water hard enough or a fair amount of snow. The caravan was fine never had a problem. What I found out by researhing the problem is that the bottom crank wheel is the problem. For some reason they used two different types for the caravan and voyager. the crank wheel on the caravan actually has deeper grooves on it so the belt does not slip off the wheel as easy. I had to replace the wheel with one from a caravan and it fixed the problem. Another solution is to make sure the plastic housing on the bottom of the engine (splash guard) is intact and is tight to keep the water out. If you have a spot where the water can spray up and hit the belt on the bottom wheel seal it so it cannot hit it anymore. Make sure your belt is tight with the correct amount of play and replace the tentioner if needed.

Best of luck

Joe

This should be a serpentine belt that is held in place with a spring loaded belt tensioner. There shold be a label under the hood showing the correct belt orientation. You need to have a long open end wrench or box wrench tentioner forward, addition tention to it to allow the belt to be slipped over one or the other pullys, once this is done, the belt should be tight. If it is over all the pullys and still loose, you either have the wrong belt or the tensioner is bad.

All u need to do is put a wrench on the tention pully and turn it clockwise... this will relive the tention take off the old belt ....put on new one. repeat relive pressure again ...slip it on pully... and relese tention..... done! :)

from front of engine looking back,belt around bottom of crank pully,water pump is just above,left side of belt comes around water pump going counter clock wise,put belt over alternator,then straight across to a/c compressor,(make sure belt goes under any idler pullies,smooth side of belt to smooth side of pully)find your belt tensioner,pry back on tensioner(be carefull)and carefully place belt under roller pully of the tensioner,release and check allignment of belt prior to starting.oh ya make sure belt is in good condition.

try putting it over where it belongs but leave it off of the smoothe tensioner . then put it over the smooth tensioner last .. It slides over it easier than the others.

this is hard to exsplain without showing you a photo ,but i will try. first get the belt around the engine crankshaft which is the pully closest to the bottom and center of the engine. when standing in front of engine start to lead the belt to the right and connect to power steering pump then up to generator, next thare is going to be a smooth pully not groved like the others to the left,put the smooth side of the belt on bottom of this pully and continue left to the ac/compressor go around ac/compressor andstraight down to the belt tensioner , and then right over to the water pump which has a smooth pully not grooved. remember the smooth pullys will always carry the smooth side of the belt and the grooved pullys the grooved side of belt. the belt tensioner will half to be released by a serpantine belt tensioner tool sold at your local auto parts store. these instructions is for 3.8 liter engine, if you have a 4.6 liter engine it will be different, so repost stating that you have a 4.6 if this dont help