Thread: Whiny Screechy Noise when in 1st-4th Gear
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Old 05-13-2014, 03:50 PM   #13 (permalink)
madaz
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Quote:
Originally Posted by SouthArk370Z View Post
A passenger should be able to tell if the whine is coming from the ECM (near their feet) or the transmission (on their left side). Or pull the carpet/trim back from the ECM and see if it gets louder.

I haven't heard what the Z's ECM sounds like (mine is quiet or maybe my ears have gotten too old to hear it) but on ones that I have heard, it was a high-pitched (higher than what I associate with gear whine) "squeal." Your screechy may be what I call a squeal.

Edit: And gear whine will usually vary in frequency with speed while ECM whine is usually constant.
Thanks for the response. In the event that it's gear whine, what should be the proper course of action?
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