When im about a quarter of the way in my throttle during acceleration theres a high pitched noise that comes from the driver side of the car and seems to be coming from under the hood, kinda hard to find exactly where it is coming from since it only happens while im driving, i ruled out belts because its on the driver side and it was doing it before i put my intake on. it doesnt effect the performance, but it sounds terrible and is annoying, has anyone else experienced this, or know what it might be?

 

Got spacers? Kinda like a whistle? It's the spacers. No other thoughts if its throttle specific.

 

Manual transmission?

 

Alternator pulley, AC Compressor pulley, or the Tension pulley.

Although all these things are on the passenger side.

 

No spacers, and its automatic. and it is throttle specific, as a matter of fact, i cant recreate the noise by just going under the hood and reving up the throttle, it has to be in gear and while im accelerating.

 

Mine does it too, but it is a high pitched chirp. Happens at around 20 mph. It is the the tranny. Friend at Nissan said to replace the shift solenoids and change fluid. Going to put new filter on while I am in there. Is this the same problem?