sandman38

Hello fellow corvette drivers. I have a 2001 A4 vert w/ 56000 mi. I change tires, replaced rotors and pads, change trans and diff fluid but the sound is still there. I took it to 2 mechanis and they both say the wheel bearins are fine. the noise is like harmonic "whomp whomp whomp" sound. also note the sound is there at decleration until car comes to a complete stop. any advice would be much appreciated. thank in advance

00Corvette

Ditto. I'm glad you described the sound. I have been having that same issue for the last year or so...

I thought maybe TT bushings/bearings or pinion bearing/ring bearing maybe...??

Anyone???

bobby777

Whenever I give someone a ride--theres a Rear-End noise-its like a vibration followed by a foul odor--

ALVETTE00

Noise and foul odors are 100% normal from a "rear-end"
:rof l:

ALVETTE00

give more details...does it happen when you're going straight or making turns at low speed...like when in a parking lot?

sandman38

the noise occurs all the time . However, it seems the noise is reduced when cornering to the left

ALVETTE00

that's different from the issue i had...my clutch packs were bad inside the rear and had to be replaced.

sandman38

ttt

sandman38

any ideas? btw I am writing from Homewood,IL thanks this sound is driving me crazy

99vetteran

Are your tires cupping at all, thats a simular sound we hear all the time from customers. Usually the tires are cupped, if you rub your hand one direction it will feel smooth, if you rub the tread back in the opposite directiion it will grab your fingers. If your tires are directional which most are on the vets you can't rotate from side to side unless you break the tire down off the wheel and move it to the opposite side. That might correct it, if its an asymetrical tire which means there is in inside tread and a different outside design, then you could just move them side to side. This will only work if you actually have a tire issue. I rarely sell a directional tire unless they just aren't available in a specific size. I don't know if this is your problem, but, check the rear tires and see if that could be the issue. Good luck, if its showing abnormal wear and they are cupping also have an alignment done.

sandman38

sorry for the long reply. I have been very busy lately. the sound is still there and I have tried all of your recommendations. Looks like I will have to take to a trans specialist or dealer. thanks to all. Still any ideas are welcome

Dave68

I had tp tighten the right side of the rear sway bar to get rid of a noise that would primarily be heard during takeoff. Check the sway bar nuts for looseness.

eylesda

Hooray, at last a fellow member with the same noise I've endured for the past 3 years!!!!

I have had my car at the dealer and independent mechanic shops and no one can tell me what the problem is.
I suspected wheel bearings but they were taken apart and put back in again as were good as new.

I too have changed tyres, brake pads and rotors. Have had every
bolt loosened off and re-tightened....etc......

And yes, the vibration, or rumble, is less when I turn to the left even very slightly, and yes we have the same mileage!

I have now learned to live with it even though it is quite annoying.

I'll happily listen to anyone with a solution though

Paris Hilton's Dog

This sounds like the same noise I have in my 2000 Hardtop (63000 miles). I just replaced both rear wheel bearings this weekend but the noise is unchanged. It sounds like "once per rev" so maybe it's tires. I remember that the last time I put on new tires, the old ones were really noisy. But since you said that you replaced your tires, I guess it rules out that possibility in your case. I kinda suspect the final drive (gears or a bearing) too, but I really hope it's not that...People have told me that some aluminum housing differentials have a tendency to get noisy because the pinion bearing starts to deform the housing (axially) over time so the pinion/ring gear mesh alignment gets out of spec. I like to pretend that this doesn't happen to Corvettes. I've also been thinking about the torque tube bearings...doesn't sound like high enough frequency to be them but who knows...
If you ever figure it out, PLEASE post the info.

WildBZ06

So I have similar issues with my 01 Z06. A couple times I have gotten the rear end vibration at highway speed accompanied by a bad odor. Almost like a burnt grease smell. Seperately I have heard clicking from rear at low speed in 1st or 2nd gear. I read that this could be due to axle shaft nuts not torqued properly. ?? The most common thing I hear is a swooshing sound from torque tube, heard thru shifter area. Car seems to not roll as smoothly when I hear the noise. Maybe just coincidence but if I start the car in neutral I don't head this sound and car runs smooth. I'm wondering if clutch is the source of my issues. It doesn't seem to slip any, even when launching with nos.
Has anyone figured anything out on any of these issues?

bob22z06

I have an 01 Z 20k too I notice the rumbling sound coming from the drive shuft area when its in neutral, but when I press the clutch pedal the noise goes away .....I've seen some posts here some guys said that sound is normal ....to much horsepower ......

jimcork1

Tires tires tires. I use Firestone Firehawk or Michelin's. No one mentioned brand of tires. I had a similar problem on my Mercedes with same size brand of tires. I also had cupping on the MB and chased all the same issues including noise. Finally Michelins solved the problem. I run Michelins on the Mercedes and Firehawk or Michelin' PS2's on the vet. No rear end noise. (but perhaps I am a bit hard of hearing.)

navyvetteran

Good one !!!!!!

jward2496

what about the parking break? could that make the noise?

65GGvert

Sure sounds like tires. What did you change your tires to?