A serpentine belt has an idler pulley on is to keep it tight at all times. If your serpentine belt is loose, then something is worn out. Its possible the idler pulley is stuck in its bracket so it cannot move or the spring on it is worn out.
its self adjusting
Should have an automatic belt tensioner - if tension not correct replace tensioner
Should have an automatic belt tensioner -perhaps it is defective I don't think there is a belt tensioner. Belt tension is adjusted at the power steering pump bracket and idler pulley assembly.
i want a exploded view as a picture ,to show the reroute of the belt.
Loosen up the power steering pump and pull on pump till belt is tight.
Loosen bolt in tension pulley, then loosen tension bolt. Replace belt. Tighten tension bolt. Last, tighten bolt through pulley.
Your belt is probably stretched or the tensioner is weak. Try a new belt, or replacing the tensioner. If it is still loose get a 1/2 inch smaller belt.
Loosen the bolts on the alternator (do not take them all the way out), push the alternator toward the engine a little, take off the belt, (make sure you draw the path of the belt first) install the new belt according to the serpentine belt path diagram, and pull the alternator away from the engine (you may need a iron bar to help you be careful not to damage the alternator) and have someone else tighten the bolts of the alternator while you put tension on the alternator to tighten the belt.
You can obtain a serpentine belt diagram have most Chrysler/Jeep dealerships. The serpentine belt diagram can also be found at most auto-parts stores.
I need a routing diagram for the serpentine belt on a 1998 Jeep Wranger, 4 cylinder, with air conditioning
I could be wrong here, but I think the very term serpentine belt implies there is only one. Of course you also probably have a timing belt or chain as well. And you could have another belt if you belt drive an accessory like a plow.
not from the factory