Vibration....please help...!
Thread Starter
16 Vettes and counting…..
Joined: Nov 2005
Posts: 4,811
Likes: 1,146
Vibration....please help...!
After changing rotors and calipers, I felt a vibration at 46 MPH and above, and I'm pretty sure it wasn't there before, but I guess I could be wrong. I don't really feel it in the steering wheel, and you can also feel it from the passenger seat. At 82 MPH and above, you feel it in the steering wheel.
My mechanic replaced the calipers and rotors and we took the car back to zero. Vibration still there. I'm now convinced it's not a brake issue. I had a dynamic balance done on my wheels/tires, and even traded out wheels/tires with my buddy's C6. Vibration is exactly the same.
Using the paddle shifter, I went through the gears at 46 MPH (the strongest point of vibration) and despite the change in RPM, the vibration was the same. At 46 MPH, I dropped it into neutral and took my foot off the gas so the car was coasting at the same speed...vibration was still there, so eliminating the load on the driveline did not change anything.
Before I take it to the Chevy dealer (always a last resort), I'd appreciate any suggestions. The car only has 1800 miles.
Thanks in advance.
My mechanic replaced the calipers and rotors and we took the car back to zero. Vibration still there. I'm now convinced it's not a brake issue. I had a dynamic balance done on my wheels/tires, and even traded out wheels/tires with my buddy's C6. Vibration is exactly the same.
Using the paddle shifter, I went through the gears at 46 MPH (the strongest point of vibration) and despite the change in RPM, the vibration was the same. At 46 MPH, I dropped it into neutral and took my foot off the gas so the car was coasting at the same speed...vibration was still there, so eliminating the load on the driveline did not change anything.
Before I take it to the Chevy dealer (always a last resort), I'd appreciate any suggestions. The car only has 1800 miles.
Thanks in advance.
Race Director
Joined: Apr 2005
Posts: 10,436
Likes: 4
From: Everett Wa
Well it is time to look at the rotating assemblies. You might have a bearing failing or any number of issues. It seems to me that you have eliminated engine, driveline and and tranny. IMO time to head to the dealer.
Thread Starter
16 Vettes and counting…..
Joined: Nov 2005
Posts: 4,811
Likes: 1,146
...and this is why I dread taking it to the dealer:
http://forums.corvetteforum.com/show....php?t=1390782
http://forums.corvetteforum.com/show....php?t=1390782
Le Mans Master
Joined: Mar 2006
Posts: 5,323
Likes: 2
From: Northern NJ
Originally Posted by VETTE-NV
After changing rotors and calipers, I felt a vibration at 46 MPH and above, and I'm pretty sure it wasn't there before, but I guess I could be wrong. I don't really feel it in the steering wheel, and you can also feel it from the passenger seat. At 82 MPH and above, you feel it in the steering wheel.
My mechanic replaced the calipers and rotors and we took the car back to zero. Vibration still there. I'm now convinced it's not a brake issue. I had a dynamic balance done on my wheels/tires, and even traded out wheels/tires with my buddy's C6. Vibration is exactly the same.
Using the paddle shifter, I went through the gears at 46 MPH (the strongest point of vibration) and despite the change in RPM, the vibration was the same. At 46 MPH, I dropped it into neutral and took my foot off the gas so the car was coasting at the same speed...vibration was still there, so eliminating the load on the driveline did not change anything.
Before I take it to the Chevy dealer (always a last resort), I'd appreciate any suggestions. The car only has 1800 miles.
Thanks in advance.
My mechanic replaced the calipers and rotors and we took the car back to zero. Vibration still there. I'm now convinced it's not a brake issue. I had a dynamic balance done on my wheels/tires, and even traded out wheels/tires with my buddy's C6. Vibration is exactly the same.
Using the paddle shifter, I went through the gears at 46 MPH (the strongest point of vibration) and despite the change in RPM, the vibration was the same. At 46 MPH, I dropped it into neutral and took my foot off the gas so the car was coasting at the same speed...vibration was still there, so eliminating the load on the driveline did not change anything.
Before I take it to the Chevy dealer (always a last resort), I'd appreciate any suggestions. The car only has 1800 miles.
Thanks in advance.
Did he change all the rotors? Usually if you feel the vibration in the steering, it is a front problem, if you feel it in the seat, it is a rear problem. if you have it in both places a differnet speeds, I'd bet on a balance problem.
I would take the car to a place that has a Hunter 9700 Road Force balance machine (or similar just insist on road force balance). It does not just spin the tires, it puts a load on them and then does the balance. Many of the places that sell 20,21,22 inch rims have the machines. Worth the try.
Racer
Joined: Mar 2006
Posts: 413
Likes: 0
From: Mansfield Ohio
Originally Posted by TMyers
Well it is time to look at the rotating assemblies. You might have a bearing failing or any number of issues. It seems to me that you have eliminated engine, driveline and and tranny. IMO time to head to the dealer.
Also did you torque the wheel bearing to specs?
Thread Starter
16 Vettes and counting…..
Joined: Nov 2005
Posts: 4,811
Likes: 1,146
We've had three sets of rotors on the car...two brand new sets of Baer Eradispeed and the the OEM ones. The car feels exactly the same with all of the rotors.
As far as I know, the mechanic did everything correctly, including all torque specs. They have been working on Corvettes for 30 years and certainly know their craft.
Having put a completely different set of wheels and tires on the car, and feeling the exact same vibration at the exact same speeds, I think we've eliminated the wheel/tire balance issue.
This is making me nuts....!
If anyone has had a good experience with one of the service dept's here in Las Vegas, please let me know. I've called Bill Heard Chevrolet, and apparently they have "Corvette specialist."
As far as I know, the mechanic did everything correctly, including all torque specs. They have been working on Corvettes for 30 years and certainly know their craft.
Having put a completely different set of wheels and tires on the car, and feeling the exact same vibration at the exact same speeds, I think we've eliminated the wheel/tire balance issue.
This is making me nuts....!
If anyone has had a good experience with one of the service dept's here in Las Vegas, please let me know. I've called Bill Heard Chevrolet, and apparently they have "Corvette specialist."
Last edited by VETTE-NV; May 13, 2006 at 12:40 PM.
Thread Starter
16 Vettes and counting…..
Joined: Nov 2005
Posts: 4,811
Likes: 1,146
Originally Posted by Bandit1
Make sure the rotor placement is correct (i.e., left and right). Reversing the sides will cause vibration especially during braking.
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