I have a buzzing noise in the trunk lid. Could it be the plastic? Motordyne CBE

ZSerg · 09-28-2018, 08:47 PM

I have a buzzing noise in the trunk lid. Could it be the plastic?

Exhaust : Motordyne CBE

SouthArk370Z · 09-28-2018, 09:01 PM

It could be all sorts of things. Get someone to ride along and see if they can locate the source while you concentrate on driving.

CRiZO · 09-28-2018, 09:08 PM

There's a common issue from what I remember:
https://www.youtube.com/watch?v=YxXKbfkMWq8 may show it

SG4247 · 09-28-2018, 10:23 PM

Dude Ive had my trunk/hatch apart for about a year now, and still havent found the source of the buzzing noise.

Please post your results if you find it!

Jinxx · 09-28-2018, 10:34 PM

I had it in mine and it turned out to be the hatch gear motor box ..... took it out opened it up and put some heavier grease on the plastic gears .... before you could shake it and it would rattle after thicker grease no more rattle.... I never thought that little thing would cause so much noise and rattle .. but it stopped every bit of it

cv129 · 09-28-2018, 11:14 PM

Quote:

Originally Posted by Jinxx

I had it in mine and it turned out to be the hatch gear motor box ..... took it out opened it up and put some heavier grease on the plastic gears .... before you could shake it and it would rattle after thicker grease no more rattle.... I never thought that little thing would cause so much noise and rattle .. but it stopped every bit of it

Same here.

SG4247 · 09-29-2018, 12:07 AM

Quote:

Originally Posted by Jinxx

I had it in mine and it turned out to be the hatch gear motor box ..... took it out opened it up and put some heavier grease on the plastic gears .... before you could shake it and it would rattle after thicker grease no more rattle.... I never thought that little thing would cause so much noise and rattle .. but it stopped every bit of it

Yep did that already..no change for me. Still buzzing, sounds like an electrical short!

SG4247 · 09-29-2018, 12:19 AM

I have also:
1. Removed and re sealed the back glass.
2. Removed the rear hatch weight.
3. Removed all the plastic in the trunk and spare, foam, tools etc..
4. Removed the third brake light high mount assy completely.
5. Replaced the rear hatch seal.
6. Replaced the two spring bumpers with upgraded part #.
7. Re-set the rear latch position, to tighten up the hatch to body.
8. Removed all the wiring harnesses from the rear defrost and third high mount brake light from its mounting on the rear hatch.

The noise stopped when the defrost harness on the driver side of the hatch was removed and rolled up.

So at this point I am thinking drivers side rear defrost wiring harness.

09-28-2018, 08:47 PM	#1 (permalink)
ZSerg Base Member Join Date: Sep 2017 Location: Tampa Posts: 136 Drives: 2015-370z-Black-Manu Rep Power: 8	I have a buzzing noise in the trunk lid. Could it be the plastic? Motordyne CBE I have a buzzing noise in the trunk lid. Could it be the plastic? Exhaust : Motordyne CBE

09-28-2018, 09:01 PM	#2 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	It could be all sorts of things. Get someone to ride along and see if they can locate the source while you concentrate on driving. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

09-28-2018, 10:34 PM	#5 (permalink)
Jinxx Track Member Join Date: Dec 2015 Location: South Carolina Posts: 699 Drives: 2017 nismo 370z Rep Power: 3376	I had it in mine and it turned out to be the hatch gear motor box ..... took it out opened it up and put some heavier grease on the plastic gears .... before you could shake it and it would rattle after thicker grease no more rattle.... I never thought that little thing would cause so much noise and rattle .. but it stopped every bit of it cv129 and simul8r like this. Last edited by Jinxx; 09-28-2018 at 10:37 PM.

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09-28-2018, 09:08 PM	#3 (permalink)
CRiZO Track Member Join Date: Nov 2017 Location: Dallas Posts: 672 Drives: in traffic Rep Power: 20699	There's a common issue from what I remember: https://www.youtube.com/watch?v=YxXKbfkMWq8 may show it

09-28-2018, 10:23 PM	#4 (permalink)
SG4247 Track Member Join Date: Oct 2016 Location: OKC Posts: 786 Drives: 2010 touring Rep Power: 7842	Dude Ive had my trunk/hatch apart for about a year now, and still havent found the source of the buzzing noise. Please post your results if you find it!

09-29-2018, 12:19 AM	#8 (permalink)
SG4247 Track Member Join Date: Oct 2016 Location: OKC Posts: 786 Drives: 2010 touring Rep Power: 7842	I have also: 1. Removed and re sealed the back glass. 2. Removed the rear hatch weight. 3. Removed all the plastic in the trunk and spare, foam, tools etc.. 4. Removed the third brake light high mount assy completely. 5. Replaced the rear hatch seal. 6. Replaced the two spring bumpers with upgraded part #. 7. Re-set the rear latch position, to tighten up the hatch to body. 8. Removed all the wiring harnesses from the rear defrost and third high mount brake light from its mounting on the rear hatch. The noise stopped when the defrost harness on the driver side of the hatch was removed and rolled up. So at this point I am thinking drivers side rear defrost wiring harness.