I have a renault clio 1.4 rt 94,000 miles. Lately when ever I have been driving if I want to push down on the accelerator it makes a wistleing noise. It isn't my belts because I have had new ones put on recently. If I don't rev it as much it sounds fines its jus when I get to 3000 revs it starts to whistle at me. What would you suggest?