ive recently noticed a wierd sound and was wonderin if anyone could help me out to find out what it is or where its comming from.
95 t/a m6. basicly stock down to the filter (except for free mods)
anyways. when i drive down the street i will sometimes hear a strange whining/screetching noise.
it kinda sounds like a finger scratching a chalkboard.
i tried reving my eninge standing still but the sound wasent there. i also tried holding down the clutch and going in nuetrol but it only seems to happen when accelerating. the higher the RPM the higher the noise. i have a small hole in my muffler but i dont think that would be it. i also have a rip in the intake elbow but i dont think thats it either. any ideas??

 

a rip in the elbow could cause a whistle...

rearend maybe?

 

just found out that it doesnt make the sound if the car car is cold....warming it up as i type......


car warmed up to about 180 or so (idling) and i drove and still no noise.... so i would guess it has something to do with how long ive been driving and not neccesarly how hot the engine is..