Whinning noise @ serpentine belt area. on 2008 Volkswagen Jetta

Notice a whinning noise coming from the serpentine belt location. Noise mostly during idle & acceleration. Was told by a friend that owns the same year Jetta, who also had the same problem, said that the Idler pulleys (upper / lower) & both tensioner pulleys where going bad. I went ahead & changed out the pulleys & serpentine belt but still getting the whinning noise. Any suggestions of what might be causing the noise? Jason

by in New Braunfels, TX on August 25, 2011
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1 answer
ANSWER by , August 25, 2011
My guess would be belt tensioner needs replacing,or waterpump is going bad.