I have been hearing a whining type noise when I am in 2nd -4th gears and hit about 3500 - 4000 RPM. The noise continues if I push the RPM higher but it stops when I am not in gear or when I shift to a higher gear (until I get back up to 3500 RPM again...). As I have tried to replicate the noise I notice it happens more often after the car has been sitting for a while, not recently driven. I took it to the dealer because they had just recently worked on my transmission (3rd gear problem fixed) and they said there is nothing wrong with it and they said they couldn't replicate the noise. I tried to record the sound but it doesn't come up on the recording over regular engine noise very well. I will try again. Best description I can think of: relatively high-pitch whining noise...picture putting the edge of a piece of paper into the blades of a fast moving fan (similar noise). Sorry for the general lack of info, not sure where to go from here. Thanks in advance for any advice.