I recently replaced the serpentine belt in my 2001 Jeep Cherokee. It worked great. 10 days later is has started to squeal. At first it was only when the hear or defrost was turned on and I accelerated. It stopped when I turned it off. The next day It started up while driving without any heat on and continued while in motion. It is silent when stopped. The battery gauge also went completely down. Any ideas?

http://www.ask.com/question/jeep-serpentine-belt-diagram several different one on this page

When the belt starts to squeals, its time to replace it. over time the belt will streach and get glased over. 9 time out of 10 replacing it will stop the squealing...1 percent....you may have to replace your belt tensioner, along with your belt.....
Hope this helped you ??

Not recommended to measure the serpentine belt...as to many variables...Your local Auto parts store should have your needed replacement in stock...best to be perfect on the dimensions...:) Your Make, Model, and engine are all the specs the Parts Team needs...:) Hope this helps.

First when it's cool I'd replace the missing antifreeze. Then I'd have the Serpentine belt checked and/or replaced, while that's being done I'd have the pulleys, adjuster and waterpump checked.

Check belt tension, squeeling is most likely due to belt slippage. Have you noticed any fluid leaking from under your Jeep? Coolant level drop could be from bad water pump, when the pump needs replacing, water flows out of a "weep hole". It could be leaking onto your belt also, causing it to squeel

have you been to the dealers for a read out of the surpentine belt diagram. they will give a diagram for nothing. most of the time.

If you get the squealing noise even when car is not running, and if noise get louder when you push the accelerator pedal, then it is the serpentine belt.

You may need to put the belt in tension, or to replace it.

May be a weak tensioner that needs replacing. Make sure you clean pulleys well with brake cleaner or similar as well. I have had one with similar problem, that Gator back belt was causing it. I'm not 100% convinced that a notched belt will get as good a grip as a complete rib all the way around the belt. Just doesn't add up to me. If you compare that to tire grip, then you'd be telling me that snow tires would work better on the Nascar circuit?

Try removing the belt and turning each pulley by hand. If everything is smooth and free, with the belt still off, drive down the block once and see if the noise is there (this will eliminate all rotating accessories on the front). If you hear the noise, then there is a problem deeper inside. Oil pressure is good? Dont' forget when doing this, you will have no power steering, so be careful.

First try some spray on Belt dressing. Available from any Autoparts store !