3-Series (E46, E90)Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.
Damn it !
Once and a while I hear an annoying, high pitch cricket or little-bird-like chirpping sound coming from the left vent or foot well on my side . At least that's what it sounds like. I usually only hear it when I turn ignition on and after when engine is running for first several second (after this sound is gone)
It does not go away when I turn off the radio, fan and A/C, it does not seem to be related to RPM or steering movement. Sometimes I don't hear it for weeks, then it is back. Cold or hot doesn't seem to matter. I have just replaced both drive belts and alternator. Sound is still there.
Any tips where to look?
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