Intermittent vibration '94 6-spd
Thread Starter
Intermediate
Joined: Jul 2017
Posts: 27
Likes: 0
From: Los Gatos CA
Intermittent vibration '94 6-spd
Annoying intermittent vibration felt in shifter when in gear. 5 seconds vibration, 5 seconds gone.
At all speeds.
Vanishes when I put in clutch.
This is a new problem, as I've had the car for 2 years.
Replaced U-joints and rear bearings. 6 month old tires all around.
Maddening. Please help me diagnose.
Thank you so much.
~Ricardo Furioso
ps-I've read about 15 "vibration" threads, and haven't found this particular annoyance.
At all speeds.
Vanishes when I put in clutch.
This is a new problem, as I've had the car for 2 years.
Replaced U-joints and rear bearings. 6 month old tires all around.
Maddening. Please help me diagnose.
Thank you so much.
~Ricardo Furioso
ps-I've read about 15 "vibration" threads, and haven't found this particular annoyance.
Thread Starter
Intermediate
Joined: Jul 2017
Posts: 27
Likes: 0
From: Los Gatos CA
Good question. Will check. Thanks.
The weird thing is I don't have to be doing anything to have it start and stop. Feels like a bad bearing.
The weird thing is I don't have to be doing anything to have it start and stop. Feels like a bad bearing.
Last edited by Furioso; Jun 18, 2019 at 05:30 PM.
Thread Starter
Intermediate
Joined: Jul 2017
Posts: 27
Likes: 0
From: Los Gatos CA
The vibration is most strongly felt in the shifter.
But it of course you can feel it throughout the car.
It disappears when rolling in neutral.
It recedes almost completely, but not quite, when the clutch is depressed.
And my Corvette failed Californicate smog test today.
So I'm kind of depressed as well.
Thanks again for your wise counsel, oh Forum Graybeards.
~ Rich
But it of course you can feel it throughout the car.
It disappears when rolling in neutral.
It recedes almost completely, but not quite, when the clutch is depressed.
And my Corvette failed Californicate smog test today.
So I'm kind of depressed as well.
Thanks again for your wise counsel, oh Forum Graybeards.
~ Rich
Last edited by Furioso; Jun 19, 2019 at 03:47 AM.
Racer
Joined: Aug 2008
Posts: 388
Likes: 116
From: Jackson Michigan
With it cycling on and off, could it be the A/C compressor? Make sure your A/C is off and see if it still vibrates. With the clutch depressed, engine (A/C) vibrations wouldn't transfer through the transmission to the shifter. Just a thought.
Regards,
John
Regards,
John
Team Owner
Joined: Dec 2003
Posts: 21,847
Likes: 140
From: When all is said and done... there is a hell of a lot more said than done. Riverside,Texas
St. Jude Donor '05 thru '26
The vibration is most strongly felt in the shifter.
But it of course you can feel it throughout the car.
It disappears when rolling in neutral.
It recedes almost completely, but not quite, when the clutch is depressed.
And my Corvette failed Californicate smog test today.
So I'm kind of depressed as well.
Thanks again for your wise counsel, oh Forum Graybeards.
~ Rich
But it of course you can feel it throughout the car.
It disappears when rolling in neutral.
It recedes almost completely, but not quite, when the clutch is depressed.
And my Corvette failed Californicate smog test today.
So I'm kind of depressed as well.
Thanks again for your wise counsel, oh Forum Graybeards.
~ Rich
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Intermediate
Joined: Jul 2017
Posts: 27
Likes: 0
From: Los Gatos CA
Yes, it cycles on and off.
Like a bad bearing somewhere.
It's not the AC.
It's in the driveline, I'm pretty sure.
Pilot bearing?
I know for sure it'll be a PITA to diagnose.
And probably expensive to fix.
Thank you for your continued support and suggestions.
~ Rich
Like a bad bearing somewhere.
It's not the AC.
It's in the driveline, I'm pretty sure.
Pilot bearing?
I know for sure it'll be a PITA to diagnose.
And probably expensive to fix.
Thank you for your continued support and suggestions.
~ Rich
Le Mans Master
Joined: May 2005
Posts: 7,362
Likes: 2,281
From: Central Maryland
Le Mans Master
Joined: May 2005
Posts: 7,362
Likes: 2,281
From: Central Maryland
I think the odds are exceedingly slim that this problem is related to motor mounts. IMHO, it's be a waste of time to look for it there, at least until you've inspected many other candidates first.
Check the A/C compressor mounting brackets, bolts, etc, and check to be sure the belt tensioner is doing its job properly.
Live well.
SJW
Check the A/C compressor mounting brackets, bolts, etc, and check to be sure the belt tensioner is doing its job properly.
Live well.
SJW
Melting Slicks
Joined: Jul 2008
Posts: 2,269
Likes: 142
From: Ottawa Ontario