5.9 serpentine belt... help! - JeepForum.com
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post #1 of 3 Old 12-27-2007, 09:44 AM Thread Starter
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5.9 serpentine belt... help!

ok guys... my first thread and I need some help because this is driving me crazy!

I got my 5.9 in February 07 and about a month later, the serpentine belt started squealing. I used some belt conditioner and that helped for about a day, then it started back up. After a few weeks, the squeal only got worse... so I finally replaced the tensioner. This lessened the noise, but the squeal was still present. The local garage suggested replacing the belt, so I did and it was fixed! Or so I thought...

Not too long after this, my rear-end gave out so the jeep was parked for a few months. But I just put a new rear-end on it and am driving it again (yay!). But now, after driving about 200 miles, the stupid belt is squealing again!!!!!!!


The only thing I can figure now is that I have a pulley that is causing the belt to wear unevenly....?

Please help!

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post #2 of 3 Old 12-27-2007, 10:12 AM
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Very well could be your water pump. With the belt off check the shaft to the WP see if there is any play

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post #3 of 3 Old 12-27-2007, 10:27 PM
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could also be the idler pulley and/or tensioner pulley bearings are shot. They are pretty cheap at Rockauto.com and easy to replace, I just did both on my 5.9 as a preventative measure at the same time I did the water pump (Pepboys) and ASP underdrive crank pulley (Summitracing.com) to replace my bent stock one.
Obviously a new belt at the same time is also a smart move.
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