Originally Posted by coversion
My e36 is making a whining noise from the engine that amplifies when i press the accelerator... it almost sounds like a remote control car, that kind of electric spinning noise.
Take a long screw driver and use it like a stethescope. While the engine is running, carefully put one end of the screw driver on the alternator, and put the other end near your ear (with your fist as the buffer). If alternator is not the culprit, do the same with other components (like the belt tensioners).