Misalignment of the accessory pulleys or a faulty drive belt tensioner may cause a chirping or squeaking sound while the engine is running. In If the replacing the belt tensioner does not correct the noise, the alternator pulley may require replacement.
Average mileage: 140,340 (80,000–200,000)
Engines affected: 3.3L V6, 3.8L V6
22 people reported this problem
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The serpentine belt comes off everytime it rains
I experienced the same problem over & over again over the course of 2 years (horribly squeaky belt due to a gross misalignment which caused the belt to either break or slip off at least once every 4-6 months); replaced tensioner pulley assembly, water pump, a/c compressor, drive-shaft pulley (harmonic balancer), alternator...finally took it in to a competent, experienced & honest mechanic who told me that this was a very common problem with this make & model...so much so that a new "belt kit" had been designed & was available; most of the pulleys on this model or grooved except the tensioner pulley, idler pulley & water pump pulley (which are smooth); therefore, the serpentine belt is grooved on one side & smooth on the other; this new belt kit has a tensioner pulley and idler pulley that are both grooved & a serpentine belt that is grooved on both sides; both said pulleys and the belt were replaced & the van has been squeak free with no belt misalignment or belt failure (breaking or coming off) for a couple months now... needless to say, I'm plumb thrilled about how things finally turned out!!
you can put brake fluid on the belt and it stops for a while
Loud chirping from either water pump pulley idler pulley or alternator it stops wen sprayed with with beltatine or water or wd40 belt slips off when it rains plymount Voyager 1997 3.3
replaced tension but now belt slipping off
Chirping could be heard whendriving next to another car or concrete barrier. Still chirping