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If the serpentine belt is vibrating a little this will be from a stretched belt or the tentioner arm spring getting weak. Had the same thing on my truck just the other day. If you look down while the belt is rotating and see if that arm is giving slack when it should not be. The other thing it could be is a pully starting to hang up just enough to catch the belt a little bit.
Remove belt and test pulley by spinning them. All should spin freely minus the crank pulley.
Look at the belt and see if there are cracks, rips, tears or excessively worn in it. If there are a few noticeable cracks around the inside of the belt then replace it, it needs it anyway.
Now reach down to the tentioner and see if there is any play you can feel with your hand. If you can move that tentioner are easily with your hand the spring is weak and the entire are needs replaced. That's just one bolt in the center to replace that.
If you have any comments please feel free to leave them here.
ok shade tree, here, remove power steering unit, motor mount, on pass side , take bolt out that goes to motor- thru fron the inner fender its behind plastic plug jack motor as high as possible and get to bolts out that are on plate the tensioner is monted to then drop motor as low as possible and remove last bolt to tenioner plate, wrestle the plate out in order to change tentioner its a real fight , but nessacary.
if there is no tentioner pulley on it, then the adjustment has to be on the ac compressor, you should be able to loosen it up, pull it till your belt is tight, and tighten it back down.. unless the alternator is on the same belt, if so that is where the adjustment is.
You mean your belt tentioner, serpentine belt, it is not adjustable if your belt is coming off you have a bad tentioner, bad pulley or your power stering pump is leaken and your belt is soaked, if oilly firts found your leak (most common is a hose from reservoir to pump) then replace belt with a cheap belt (had lost of trouble with Life time or hi dollar belts), in the mean time also inspect your tentioner if ani play side ways replace it, also remove idle pulley and spun it close to your ear, if any noise replace it, you may get away with a single item changed, but for trouble free time, replace all items: belt tentioner ($38) idle pulley($25) serpentine belt ($25)
this sounds like the tensionor is not holding tight enough for belt, or belt is streached out and needs changed. what the belt is doing is slipping on the pulleys.
Hello there: Normally a serpentine belt will stay on tight untill it begins to strech out after it streches out to far the tention idler pulley cannot keep the belt tension tight any longer thus resulting in a belt either coming off or other things happening So what i would do is to first remove the serpentine belt and ensure that the tention idler pulley is working good make sure it does not just move freely than get a new belt and install now you should be ok Hope this is very helpful for you Best regards Michael
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