1990 Loyale 5 spd FWD FYI   Anyone experienced a whistle noise, like a tea kettle, but 1/2 that loud, that increases in pitch with RPM? At idle, nothing, start maybe 2k rpm you hear it a little, 2500-3000 more, 3500 higher pitch same volume. Coast with the clutch in, nothing. Sit still, rev engine, whistle occurs. Something on the engine. Pretty annoying at 70 mph you hear this "weeeeee" in the background. Not a radio or speaker issue either, radio on or off no effect, independent. Almo