I have this whirring noise that sounds like it is coming from the engine which increases as rpms increase. It is not noticable before 2000rpms, but as the rpms climb higher the noise gets louder. It almost sounds like a belt, but I am not sure. (actually, it almost sounds like an AC fan - but the ac is not on)
Is this normal? My jeep is somewhat brand new.
With the top down, I can't hear it - but now that it got cold out and the top is back on more, it is annoying as can be. My ride sounds like a jet taking off.
Thanks in advance for any help (I am worried it might be the transmission)
My tranny makes a small but noticable wirring noise on the highway, the Goodyear MTRs drown most of it out. If your talking about the same thing Im pretty sure its normal, but if yours is really loud then Im not sure.
Edit: It would help to know what engine/tranny you are running. I have a 4.0L 5spd.
It maybe a bearing in one of the pulley's that your belt goes around. Had a very loud whinning on my girlfriends car. Then it stopped but so did the power steering, dashboard, waterpump and radiator fan(belt broke when bearing finally seized).
I took off and checked those two pullies but they looked fine. I also checked the starter and it's OK. If the pullies are making the noise, it should be most noticable from the engine bay, but in my case the noise is most noticeable from the cab when all windows are closed.
I guess my case is still in its early stage. If you can convince the dealer something is definitely wrong, they should take care of it under warranty.