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?