Maybe difficult trying to explain a noise but here goes. The car is a 2002 Rx300 152k fullish history, transmission fluid changed last year and still clean. Driving along and started to hear a weird metallic squeaking/whining that disappeared at higher revs. A bit like a rusty hinge on a metal gate but consistent and rising in pitch then barely audible till the revs drop to under about 2000rpm. Then squeals again till over about 2000 rpm and on and on.... and obviously most apparent when driving in town -sounds like metal on metal, like a rusty gate
I think the noise is from the rear of the car. I tried listening and raising revs with my head in the engine bay but couldnt hear it. Occasionally i can smell a hot metal kind of whiff but that could just be paranoia. The car shifts and drives fine apart from the noise that drives me nuts.
I dont know anything about 4 wheel drive systems but wondered if there is a shot bearing somewhere or a lubricant issue- there are no leaks. It also happens when the car is stationary with drive in Park or Neutral and obviously when driving along.
Easiest thing is probably to get it to a garage and get an opinion from them. Failing that just turn the radio up and ignore it as it drives fine.
Anyway wondered if anyone here has any clue and any ideas gratefully received
thanks
Patrick