My car makes a whir, almost high pitch whistle noise, occasionally when I hit 25 mph and accelerate to 35. The sound only occurs in the warmer months (over 80 degrees F). Source sounds like it’s coming from to the right of the dash under the glove box. Not every time I accelerate, probably 15% if the time. So strange.
It only does it sometimes, and starts low pitch then ends high pitch when I hit 35. Almost like a singer going from low octave to the top note. Or when you hum and start low then go high and the hum breaks off at the top note.