destructo 1 Posted October 23, 2019 yep can almost 100% confirm the whistling noise is transmission related. Did a take off with my head out the window and u can definitely hear the noise from under the car. The whole "it does it more when the car is at temp" is probably because when its warm the fluid gets thinner???? It's got the heavy duty tow pack and the previous owner used it to occasionally tow a caravan (probably in eco mode too), so that's probably what wore it out in the first place. I've been driving it around in power mode, still get the whistle on the takeoff. Hopefully an oil change, filter and maybe some additives will shut it up. Lucky for me it's an early EF so it's got the dipstick. Edit: just saw this on another post: "A blocked BTR auto trans filter, can also make a whistling noise on acceleration - the transmission oil pump becomes noisy like that, as it strains to move fluid around." Thanks again guys. 1 gerg reacted to this Share this post Link to post Share on other sites
destructo 1 Posted January 20, 2020 OK, so it has been ages but I finally got the filter changed and some fresh oil into it.. and it's still doing the noise. I have found a transmission treatment by nulon I might give that a try. Share this post Link to post Share on other sites