C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

a vibration or grinding when turning slow

Thread Tools
 
Search this Thread
 
Old Oct 5, 2007 | 08:03 PM
  #1  
neokorros's Avatar
neokorros
Thread Starter
Pro
 
Joined: Aug 2007
Posts: 506
Likes: 1
From: annapolis md
Default a vibration or grinding when turning slow

i can feel a vibration or grinding of some sort when turning slow (especially when turning right) in the gas pedal.

anyone have any ideas what it could be ?


~ nick
Reply
Old Oct 5, 2007 | 08:13 PM
  #2  
lar66BB's Avatar
lar66BB
Burning Brakes
Supporting Lifetime
20 Year Member
Conversation Starter
All Eyes On Me
Top Answer: 1
 
Joined: Nov 2002
Posts: 1,018
Likes: 52
From: Deltona Fl.
Default vibration

Maybe the posi unit. Might need a additive you can get it at the
dealer. Slang for it is whale oil. It lubes the clutches in posi unit
of the rear end. Hope that is what it is.
Reply
Old Oct 6, 2007 | 01:18 PM
  #3  
neokorros's Avatar
neokorros
Thread Starter
Pro
 
Joined: Aug 2007
Posts: 506
Likes: 1
From: annapolis md
Default

ty
Reply
Old Oct 6, 2007 | 08:35 PM
  #4  
neokorros's Avatar
neokorros
Thread Starter
Pro
 
Joined: Aug 2007
Posts: 506
Likes: 1
From: annapolis md
Default

anyone else have any suggestions as to what it might be ?

what components could even cause a grind feeling in the gas pedal when turning right ?
Reply
Old Oct 6, 2007 | 10:22 PM
  #5  
SUPERCRUZ's Avatar
SUPERCRUZ
Burning Brakes
15 Year Member
 
Joined: Mar 2003
Posts: 1,156
Likes: 2
From: Arlington VA
Default

Check the wheel bearings and hub assemblies. Jack the car up and check for any free play in the wheel assemblies by gripping the top and bottom of each tire and then trying to push or pull on the wheel. Do the same from test gripping the left and right side of each tire.. Rotate each tire and see if you hear any grinding noise. If you notice the noise more when turning right, suspect one of the left side bearing hub assemblies might be going bad since the left side wheels are loaded in a right turn

Other areas to check would be rear differential lubrication, suspension components loose, crack in wheel, brake calipers and mounting brackets loose. Also check th rear parking break assembly as sometimes parts fail or come loose inside the drum and create a ginding noise.

Do a search in C5 Tech under Wheel Bearing Noise. You will find all kinds of posts there. Good luck with it.
Reply
Old Oct 6, 2007 | 11:23 PM
  #6  
Cart99's Avatar
Cart99
Racer
15 Year Member
 
Joined: Jun 2005
Posts: 333
Likes: 1
From: Mendota Heights MN
Default

If the noise is most noticable during slow speed sharp turns or u-turns, it's likely the differential positraction clutches. As suggested, the first thing to try is a diff fluid change with the correct positraction additive. Worst case is a complete diff rebuild (don't ask how I know). Hopefully yours is something cheaper.
Reply
Old Oct 6, 2007 | 11:58 PM
  #7  
500hp's Avatar
500hp
Burning Brakes
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Nov 2004
Posts: 781
Likes: 0
Default

I see that you have headers...
are the driver's side tubes contacting the steering shaft?
Reply
Old Oct 7, 2007 | 02:05 AM
  #8  
Bluefire's Avatar
Bluefire
Le Mans Master
Veteran: Air Force
20 Year Member
Photoriffic
Liked
 
Joined: May 2006
Posts: 7,875
Likes: 254
From: Hillsboro OR
Default

My 2:73's started making noise about a year ago. Diff fluid change helped for a short while (6 months) then it came back. When you change your diff fluid check to see if there are any shiny metal chunks in it. Mine did.
On the bright side, it forced my upgrade to DTE 3:42's sooner.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Oct 10, 2007 | 10:28 PM
  #9  
neokorros's Avatar
neokorros
Thread Starter
Pro
 
Joined: Aug 2007
Posts: 506
Likes: 1
From: annapolis md
Default

i havent had a chance to change any fluids yet, but i noticed today it is putting counter pressure on the steering when i turn right at slow speeds.

example: i am going 10mph in parking lot and make 90 degree right turn with foot on gas in first gear.

i can feel a grinding/vibration in the gas pedal itself and its harder to turn the wheel to the right as if some force is slowing it down.
Reply
Old Oct 12, 2007 | 12:23 PM
  #10  
Richy1's Avatar
Richy1
Instructor
15 Year Member
 
Joined: May 2006
Posts: 177
Likes: 0
From: With great power, comes great responsibility... ..."Uncle Ben"
Default

I’m getting the same symptoms but I feel the vibrations when doing anything over 10 mph. Even when I’m on the highway going 60 mph on a subtle right turn I can feel the gas peddle vibrating. I changed my transmission and diff fluid a month ago, I’m not getting any noise or vibrations under sharp right or left turns.

Ex: When I do figure eights, I hear and feel nothing. When I go on an entrance ramp to a highway (right turn) or going around a turn at high speed I feel the vibration in the gas peddles.

This is driving me crazy...
Reply
Old Oct 12, 2007 | 01:59 PM
  #11  
CO YGOSLOW's Avatar
CO YGOSLOW
Burning Brakes
15 Year Member
 
Joined: Jul 2004
Posts: 825
Likes: 2
From: Monument CO
Default

Just had the same problem fixed...the noise is the rear diff clutch chattering. Need to put an additive in with the diff fluid.
Reply
Old Oct 12, 2007 | 09:28 PM
  #12  
neokorros's Avatar
neokorros
Thread Starter
Pro
 
Joined: Aug 2007
Posts: 506
Likes: 1
From: annapolis md
Default

what additive ?
Reply
Old Oct 12, 2007 | 10:04 PM
  #13  
CoastalRAP's Avatar
CoastalRAP
Safety Car
 
Joined: Apr 2003
Posts: 3,864
Likes: 0
From: Stuck in Paradise
Default

Originally Posted by neokorros
what additive ?

Reply
Old Oct 13, 2007 | 12:36 AM
  #14  
allmee's Avatar
allmee
Racer
 
Joined: Dec 2005
Posts: 431
Likes: 0
From: North Las Vegas Nevada
Default

Originally Posted by neokorros
what additive ?
I did my rear end fluid a couple of months ago, but I used Amsoil severe gear oil, which needs no additive at all. Nice and easy! That is if you are gonna do the rear fluid!
Reply

Get notified of new replies

To a vibration or grinding when turning slow





All times are GMT -4. The time now is 06:41 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE