Please, any suggestions are welcome.. I have a 2001 Sentra that has started making a whining noise. It gets louder as it accelerates or so my husband says. I don't think it does. he is leading towards it being the power steering pump (no change in noise when turning). Any suggestions before we take it to the dealer. The car is still under warranty but has 98,000 miles on it. Do you know if it will be covered by warranty? Thanks for any and all suggestions!