Engine drone

[calorific Lurker Find all posts View Profile Close calorific]

I've noticed a droning sound when in 5th gear (2010 5sp auto) and engine not loaded but accelerator slightly depressed. Anyone experienced this before? Sound goes away when accelerator pedal is moved either slightly down or up.

[Corigator Avid PP Poster! Find all posts View Profile Close Corigator]

Seems to be a known problem with the 150. Snorkel seems to fix it. See other posts on the subject

[calorific Lurker Find all posts View Profile Close calorific]

Ended up being torque converter shudder. A transmission flush with some additive seems to have reduced the sound.