2nd Gen Rav4 (2003, 2.0L vvt-i).
where the rpm is steady at 3000rpm or above, such as driving at 120km/h (75 miles/h), ,
there is a reciprocating wobbly noise, coming from the front. It's not loud, but consistent and noticeable.
under that rpm the noise is not present.
I was thinking it...