Hi all. New user here having a problem with my 2014 journey. So recently out of the blue my engine has a secondary revving noise that kicks in at about 25 km/h. It starts low in pitch but continues to go high and louder as my speed increases. Over 35 km/h it becomes louder than the regular engine noise but if I slam down on the accelerator I can hear the regular engine noise again. This only happens when I am in gear, and is tied to speed and not revs. The noise also get higher pitch when I steer to the right, but not left. I don't feel like getting ripped off at a mechanic so do you have any ideas? Thanks!