Moderator: volvite
the TSB mentions that the rattle occurs @ "around 2,200 RPM"skinny2 wrote:So I was able to replicate it more this morning. Only seems to be noticeable in 1st or 2nd gear and pretty much turns on right at 2,200 rpm. I can hold it there and have the noise remain constant. Engine was fully warmed up and outside temp was 34F. It really sounds more like a buzz in the exhaust/maniford or somewhere under the hood.
That reminded me of something I read awhile back. There is a TSB for the "power valve actuator" NTB05-015b on earlier models and that almost seems like the exact problem. I'm not sure why it only kicks in at lower speeds and not at idle though...that part seems different than the TSB.