Humming sound

[Mrkentee]

(06-24-2026 )Rawze Wrote:  just throwing thoughts at the wall here...
It can also be the accumulator in the A/C system causing a hum too. very common as they wear out.

Shut off a/c no change.
Parked with hood open varying rpm, can’t duplicate. Almost sounds like air going through something.
But definitely stops when I let my foot off the pedal when driving.