2001 V70 2.4T, 266K miles:
I'm looking for ideas on a symptom the car has developed.
A few months ago I began noticing a high-pitched whine. It has remained, maybe getting worse, maybe not. I'm used to it now...
It is dependent only on engine speed. Not vehicle speed, doesn't matter what gear, park, or neutral. Also doesn't appear to be dependent of engine load. Noise occurs all the time, hot or cold.
I replaced the serpentine belt and tensioner pulley because it was quick and easy. Bearing was funky, but no change, was able to observe the other accessories. No radial play in PS pump, alternator, or AC compressor and they spin freely.
My next step is a water pump, t-belt and pulley/tensioner. But should I be looking towards a turbo or something else? I was hoping to rule out turbo since the sound doesn't change with engine load.
TIA
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