Nissan 370Z Forum  

Low RPM vibration

As title says, under deceleration (engine braking) in any gear there is a vibration when the needle falls around 2300-2100 RPM. Not apparent above or below this range. You can

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain


Reply
 
LinkBack Thread Tools Display Modes
Old 11-22-2015, 06:39 PM   #1 (permalink)
Enthusiast Member
 
RanRich's Avatar
 
Join Date: Mar 2015
Location: St. Louis
Posts: 425
Drives: 09 PG Sport M6
Rep Power: 3372
RanRich has a reputation beyond reputeRanRich has a reputation beyond reputeRanRich has a reputation beyond reputeRanRich has a reputation beyond reputeRanRich has a reputation beyond reputeRanRich has a reputation beyond reputeRanRich has a reputation beyond reputeRanRich has a reputation beyond reputeRanRich has a reputation beyond reputeRanRich has a reputation beyond reputeRanRich has a reputation beyond repute
Default Low RPM vibration

As title says, under deceleration (engine braking) in any gear there is a vibration when the needle falls around 2300-2100 RPM. Not apparent above or below this range. You can feel it in the wheel and even hear it a little too (but only just), almost feels like there is a very slight resistance.

Thinking it could be from the diff, I can't feel anything particular coming through the knob if I rest my hand on it.

I have put almost 16k on the car since picking it up in December last year, (now at ~43k) and am thinking a diff fluid flush might help? (service manual says replace at 60k)

Has anyone else experienced this? Should I look into replacing the oem VLSD? Any input is appreciated.
__________________
AAM | Dynosty | Ecutek | Eibach | Hawk | H&R | Nismo | Stillen | Stoptech | Z1
RanRich is offline   Reply With Quote
Old 11-23-2015, 09:02 AM   #2 (permalink)
Enthusiast Member
 
chuckie311's Avatar
 
Join Date: Jul 2012
Location: las vegas
Posts: 313
Drives: Q50/G37
Rep Power: 12
chuckie311 is on a distinguished road
Default

check your Differential bushing could be collapsing

Differential bushing
__________________
Tuned by (Seb@Specialty-Z)
2011 G37 Cam'd FBO 347whp 280wtq Corn Fed 4.08 Gears
chuckie311 is offline   Reply With Quote
Old 11-23-2015, 09:11 AM   #3 (permalink)
A True Z Fanatic
 
JARblue's Avatar
 
Join Date: Mar 2011
Location: Austin, TX
Age: 43
Posts: 36,449
Drives: 11 Z34, 98 E36 M3
Rep Power: 2684440
JARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond repute
Default

Bet the rear subframe diff bushing failed. Look for evidence of fluid leaking out where the diff connects to the subframe (see pic in the link above). Dealer will want to replace the $900 subframe plus the bushing and stupid amounts of labor

Just take it to a decent shop and they should be able to replace just the bushing for a couple hundred plus the Whiteline diff bushing set is like $100. Don't put in another fluid-filled OEM bushing that could just fail again.
__________________

2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed |

Last edited by JARblue; 11-23-2015 at 09:13 AM.
JARblue is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
heavy vibration ryan370zpower Engine & Drivetrain 19 07-27-2015 11:04 AM
Vibration 03springer Engine & Drivetrain 3 06-26-2013 03:50 PM
Vibration when braking need some help! 1cleans13 Brakes & Suspension 19 01-03-2013 02:43 PM
Slight vibration 370Zapper Nissan 370Z Warranty / Scheduled Maintenance / Servicing / Repairs 14 10-19-2010 09:52 AM
Shifter Vibration/ Shift knob vibration BlackCherryZ Nissan 370Z General Discussions 31 01-16-2010 09:53 AM


All times are GMT -5. The time now is 04:06 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2