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Discussion Starter · #1 · (Edited)
So my Mazda3 has this whining noise that is consistent with the engine RPM whilst in gear (between 20kph to 40kph is when it's most obvious). It almost sounds like a supercharger. I can only hear it when I accelerate lightly between 1500 to 2000 RPMs, and it seems fairly consistent across the different gears.

The thing is that it comes and go, and I haven't been able to pinpoint exactly when it does that (it seems to occur more often after restarting the engine following a long drive).

The transmission shifts fine and I haven't noticed anything abnormal with the driving experience.

New video < Video of it happening, the noise occurs at 14kph
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