On my way home from class last night I noticed a tap/winey nosie coming from my engine bay. This nosie accurs when the car is between 2500-5000rpm when gas is being given, no other time. Not at idle or on down shift. Only when the throttle is press down between these rpm's and it happens in every gear. I think it maybe a blown gasket not sure? My car is on 01GT, I only have bolts on for aftermaket and have not had any new parts in about 3 months. What could this nosie be, I have appointment with ford on wednesday, but I would like to know your opinions. Thanks.