Nissan 370Z Forum - View Single Post - Whiny Screechy Noise when in 1st-4th Gear

SouthArk370Z · 05-13-2014, 10:30 AM

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.

05-13-2014, 10:30 AM	#12 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	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. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma Last edited by SouthArk370Z; 05-13-2014 at 10:37 AM.