started noticing a whistling/whining sound while driving on the highway today. gets louder and started while on turns, during accel, and when on gear. it goes quiet when i kick it in neutral.
sounds like its coming from the rear but can’t be too sure might be tranny.
its a s13 hatch stock motor
might be bearings? but sound stops when out of gear so not too sure
low diff fluid?
or oil pump? found a long dent going horizontally across the middle of my oil pan the other day, no leaks though.
sound stops whenever i clutch and whenever im in neutral even when revving. its starts lower pitch usually in 2nd gear and goes higher pitch as i accel. started sounding a rough a bit in 2nd and 3rd for like a minute, then went back to normal whistling.
could it be low trann/diff fluid? or throwout bearing?