I have a 1994 Deville with 4.9. I have had a whine from this engine / belt. I have had the car 2 years and always had the whine from the engine bay. When I 1st got it I changed the power steering pump. Did not take care of the noise. Today I pulled the belt off and changing it. I found the Idler pully is seems sloppy and a little noiser when I spin it. My question is, are these pulleys available? Has any one had this noise hauting them? Look forward hearing from You.

 

Available, yes - Google: 1994 deville idler pulley