Other noise on 1992 Cadillac DeVille

Thanks for the info dandd but i did what you said and it did not fix the problem so i did some more checking, i took the resiviour off and drained it and refilled and there was air bubbles when i started it up, but left, so now i know it is not the ps pump the noise sounds just like it. it is a high pitch noise that gets louder with the rpm. You can even here the noise different when it shifts gear .I replaced the water pump 6 months ago and now the ps pump and the idler pully what else could be winning loud i could exclude the transmission because the noise is at idle and not moving.Thanks for the help and hopefully i can fix the problem without expensive mechanic bill

by in Victoria, TX on June 19, 2010
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