Vibration Driving me Crazy

krayon808 · 07-24-2021, 10:43 PM

I've been searching the threads for a while trying to find my problem but was unable to. So i have a 2010 370z (automatic) and there is vibration/ shake when the rpm is around 3k-4k rpm but when you put it in neutral during the vibration/shake it goes away. in higher gears, it would happen around 1.5k - 3k rpm. took it the shop they check the driver shaft, mounts, diff bushings and nothing. the car also shakes around 60mph and up. i have z1 ploy trans mount. as far as the tires its been balanced, the alignment its good. Please help. if i cant find the problem is time to move on and sell this car ( i don't want to)

Spooler · 07-24-2021, 10:53 PM

Quote:

Originally Posted by krayon808

I've been searching the threads for a while trying to find my problem but was unable to. So i have a 2010 370z (automatic) and there is vibration/ shake when the rpm is around 3k-4k rpm but when you put it in neutral during the vibration/shake it goes away. in higher gears, it would happen around 1.5k - 3k rpm. took it the shop they check the driver shaft, mounts, diff bushings and nothing. the car also shakes around 60mph and up. i have z1 ploy trans mount. as far as the tires its been balanced, the alignment its good. Please help. if i cant find the problem is time to move on and sell this car ( i don't want to)

Go back to the factory transmission mount.

krayon808 · 07-24-2021, 10:57 PM

Quote:

Originally Posted by Spooler

Go back to the factory transmission mount.

does the z1 ploy mount make that much vibration/ shake ?

Spooler · 07-24-2021, 10:58 PM

I am sure it introduces some and it is very likely your problem. The factory mounts work just fine.

krayon808 · 07-24-2021, 10:59 PM

Ok, ill try it. Thank you

cv129 · 07-24-2021, 11:37 PM

So you get shakes that are:

Speed dependent.
RPM dependent.
Gear dependent?

The whole car shake? Shifter? Steering wheel? All of them?

Tire balancing: was it road force balanced or just regular balancing? That makes a difference for low profile tires. I assume you have a sport pkg.

krayon808 · 07-24-2021, 11:59 PM

Quote:

Originally Posted by cv129

So you get shakes that are:

Speed dependent.
RPM dependent.
Gear dependent?

The whole car shake? Shifter? Steering wheel? All of them?

Tire balancing: was it road force balanced or just regular balancing? That makes a difference for low profile tires. I assume you have a sport pkg.

yes, sport package. and yes speed-dependent, rpm dependent, and in all gear except for 1st. sometimes it does it in 2nd gear. but mostly 3rd and up. its also random consistent if that makes sense. it was regular balanced. shifter, steering wheel, car, i can see the rearview mirror stake too. sometimes on long drives i can hear this humming pulsing sound.

Rusty · 07-25-2021, 12:26 AM

What's the condition of the tires?

krayon808 · 07-25-2021, 12:26 AM

Quote:

Originally Posted by Rusty

What's the condition of the tires?

Brand new

Zoren 370 · 07-25-2021, 06:50 AM

Did the title say Vibrator drives me crazy!!

Mods pls check this…

Cyber370 · 07-25-2021, 10:55 AM

Quote:

Originally Posted by krayon808

i have z1 ploy trans mount. as far as the tires its been balanced, the alignment its good.

It’s standard practice to always start by removing non-factory items and modifications. A poly trans mount definitely will introduce more harshness and vibration.

ZoomZ · 07-25-2021, 01:02 PM

They check torque on engine/transmission mount bolts, or just visual?

SouthArk370Z · 07-25-2021, 02:54 PM

My guesses:
1) Bad u-joint(s)
2) Bad wheel bearing(s). Beacuse load makes a difference, I would suspect the rear.

But could also be a diff or trans issue. Either internal or, as mentioned above, a mount.

Doesn't really sound like an engine problem, but I'm just guessing at all this.

Good luck figuring it out and please let us know if you find out what's going on.

krayon808 · 07-25-2021, 03:01 PM

So fml I went under today . Found that the driver side bolts was loose on the trans mount. Not very loose but loose. Decided to just change it since I had the car up anyways . And damn it . It was the mount. How is it that bad. Others say the vibration is not that bad . But it’s pretty bad. So now I have z1 Poly motor mounts and trans mount for sale.

krayon808 · 07-25-2021, 03:02 PM

Thank everyone for the help!! I really appreciate it.

07-24-2021, 10:43 PM	#1 (permalink)
krayon808 Base Member Join Date: Apr 2021 Location: hawaii Posts: 8 Drives: 10 Nissan 370z Rep Power: 5	Vibration Driving me Crazy I've been searching the threads for a while trying to find my problem but was unable to. So i have a 2010 370z (automatic) and there is vibration/ shake when the rpm is around 3k-4k rpm but when you put it in neutral during the vibration/shake it goes away. in higher gears, it would happen around 1.5k - 3k rpm. took it the shop they check the driver shaft, mounts, diff bushings and nothing. the car also shakes around 60mph and up. i have z1 ploy trans mount. as far as the tires its been balanced, the alignment its good. Please help. if i cant find the problem is time to move on and sell this car ( i don't want to) Last edited by krayon808; 07-24-2021 at 10:46 PM.

07-24-2021, 10:59 PM	#5 (permalink)
krayon808 Base Member Join Date: Apr 2021 Location: hawaii Posts: 8 Drives: 10 Nissan 370z Rep Power: 5	Ok, ill try it. Thank you Last edited by krayon808; 07-24-2021 at 11:02 PM.

07-24-2021, 11:37 PM	#6 (permalink)
cv129 A True Z Fanatic Join Date: Jul 2011 Location: Dallas, TX Posts: 3,270 Drives: 09 Nismo, 16 Nismo Rep Power: 163996	So you get shakes that are: Speed dependent. RPM dependent. Gear dependent? The whole car shake? Shifter? Steering wheel? All of them? Tire balancing: was it road force balanced or just regular balancing? That makes a difference for low profile tires. I assume you have a sport pkg. __________________ Setrab \| RE-71 \| SPL \| JRZ \| Nismo \| ARK \| Whiteline \| RacingBrake \| CJM Oil Pan \| Ti shield

07-25-2021, 12:26 AM	#8 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 69 Posts: 35,516 Drives: 2011 Nismo GM 6M Rep Power: 2684439	What's the condition of the tires? Zoren 370 likes this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

07-25-2021, 02:54 PM	#13 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	My guesses: 1) Bad u-joint(s) 2) Bad wheel bearing(s). Beacuse load makes a difference, I would suspect the rear. But could also be a diff or trans issue. Either internal or, as mentioned above, a mount. Doesn't really sound like an engine problem, but I'm just guessing at all this. Good luck figuring it out and please let us know if you find out what's going on. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

07-24-2021, 10:58 PM	#4 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 14,126 Drives: 2013 Nismo 370z Rep Power: 2684394	I am sure it introduces some and it is very likely your problem. The factory mounts work just fine.

07-25-2021, 06:50 AM	#10 (permalink)
Zoren 370 A True Z Fanatic Join Date: Mar 2012 Location: FL Posts: 11,018 Drives: 11 Nissan 370 M6 Rep Power: 1913654	Did the title say Vibrator drives me crazy!! Mods pls check this…

07-25-2021, 01:02 PM	#12 (permalink)
ZoomZ Track Member Join Date: Jan 2017 Location: Vancouver, BC Posts: 801 Drives: 17' 370Z Nismo Rep Power: 40656	They check torque on engine/transmission mount bolts, or just visual?

07-25-2021, 03:01 PM	#14 (permalink)
krayon808 Base Member Join Date: Apr 2021 Location: hawaii Posts: 8 Drives: 10 Nissan 370z Rep Power: 5	So fml I went under today . Found that the driver side bolts was loose on the trans mount. Not very loose but loose. Decided to just change it since I had the car up anyways . And damn it . It was the mount. How is it that bad. Others say the vibration is not that bad . But it’s pretty bad. So now I have z1 Poly motor mounts and trans mount for sale. johnxxx, Spooler, ZoomZ and 1 others like this.

07-25-2021, 03:02 PM	#15 (permalink)
krayon808 Base Member Join Date: Apr 2021 Location: hawaii Posts: 8 Drives: 10 Nissan 370z Rep Power: 5	Thank everyone for the help!! I really appreciate it. old guy, ZoomZ and SwedeZ like this.

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