Question about 1996 Jeep Grand Cherokee

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1996 jeep grand cherokee limited v8

I replaced my tension pulley and idler pulley and the belt 4x and it still has a squeal. what will cause this?

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  • azzhoeamy Dec 29, 2008

    i checked the alternator and power steering and they seem to be fine. the belt seems to want to walk off the cam pulley. tried belt dressing and the noise just got louder

  • azzhoeamy Dec 29, 2008

    never used the dressing on old belt. never did this till i put the new belt on. all the pulleys seams to be aligned right

  • azzhoeamy Dec 29, 2008

    old tension is shot. the belt is top of the line. can't figure it out. did have a cheap one . when i put this belt on the noise went away for a day or two then now it's back

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Look at the pulley coming off the crank shaft. If the thrust bearing is going bad or is bad you will have excessive play in the crankshaft that causes excessive deflection of the belt. If it's this your looking at an engine rebuild. Just went through this on my dads jeep.

Posted on Nov 22, 2013

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I might not have enough information but the squeal is most likely a worn bearing. Try to isolate it with a "mechanic's stethescope" to locate the source. A pin point shot of WD-40 at the whining bearing (NO NOT put it on good bearings should TEMPORARILY quiet it IF it is a bearing. DO NOT overspray, just at the center of the pulleys...the lubricant should get pulled into bearing to confirm that the pump (power steering would be my guess) needs replacing.

Posted on Jan 09, 2009

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  • Jeep Master
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Did you take the time to clean all pulleys good with brake clean or similar cleaner, when belt was off? . Sometimes a little antifreeze, or windsheild washer antifreeze can get spilled on the belt(s) and cause that, as well as an oil drip. Take a flashlight & double check that you don't have oil dripping down on there somewhere. Only other thought is that maybe power steering pump working too hard or alternator on it's way out, causing extra load on the belt.

Posted on Dec 29, 2008

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  • Mike Butler
    Mike Butler Dec 29, 2008

    Did you put belt dressing on old belt too? If so, did you clean pulleys before new one installed? As far as walking off goes, double check pulley alignment while running for one that may be slightly out of alignment. When not running check all grooves in pulleys for pinched or damaged ribs.

  • Mike Butler
    Mike Butler Dec 29, 2008

    Can you get that many bad belts ? Is it good brand name belt, same rib design and all? Would it be too much ahssle to put old tensioner back on & try? Maybe bad tensioner?

  • Mike Butler
    Mike Butler Dec 29, 2008

    No drag or slop of any kind on any of the pulleys eh, especially alternator? Try a little lube on backside of pulleys one at a time, to see if noise goes away, even temporarily, or slightly ? Weird.

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