Rattle and ringing noises while driving
Thread Starter
Instructor
Joined: Jul 2006
Posts: 228
Likes: 0
From: Southern Germany
Rattle and ringing noises while driving
Today I noticed a rattle noise coming from the rear of the Z every time you let off the accelerator. It doesn’t seem to be connected to the engine or transmission. Pressing or depressing the clutch doesn’t make a difference to the noise either, plus it’s there at any RPM.
It’s very noticeable when standing next to the rear wheels and also right behind the exhaust. Almost sounds like marbles in the exhaust.
Next thing I noticed that when accelerating hard at about 4000 RPM all the way up to redline there is an additional ringing/whistling. What is going on with my Z ??!? Maybe a problem with the heat shield or torque tube ?
It’s very noticeable when standing next to the rear wheels and also right behind the exhaust. Almost sounds like marbles in the exhaust.
Next thing I noticed that when accelerating hard at about 4000 RPM all the way up to redline there is an additional ringing/whistling. What is going on with my Z ??!? Maybe a problem with the heat shield or torque tube ?
Racer
Joined: Dec 2005
Posts: 431
Likes: 0
From: North Las Vegas Nevada
This is just a small chance, but I had a high pitched ringy rattle that turned out to be the sleeves on my rear o2 sensors. These sleeves are normally welded to the unit & had broken free. With the exhaust vibration, you could hear this all the time, & more so at certain RPM's. Although I don't think you would hear it most at the rear of the car.
Thread Starter
Instructor
Joined: Jul 2006
Posts: 228
Likes: 0
From: Southern Germany
Update:
I just crawled under the car as far as I could and tried to reproduce the sound by knocking against the exhaust pipes. It basically doesn’t matter if you hit one of the mufflers or the pipes, the noise itself sounds exactly the way I described earlier !
It’s enough if you just knock against the pipe with one finger.
Seems there is a problem with the springs that hold the exhaust pipes. Hopefully this will be the solution ... http://forums.corvetteforum.com/show....php?t=1335263
I will keep you updated as soon as I have the opportunity to get the car on a lift.
I don’t know how or if this could also have a connection to the ringing/whistling above 4000RPM.. any idea if this could be connected ?
I just crawled under the car as far as I could and tried to reproduce the sound by knocking against the exhaust pipes. It basically doesn’t matter if you hit one of the mufflers or the pipes, the noise itself sounds exactly the way I described earlier !
It’s enough if you just knock against the pipe with one finger.
Seems there is a problem with the springs that hold the exhaust pipes. Hopefully this will be the solution ... http://forums.corvetteforum.com/show....php?t=1335263
I will keep you updated as soon as I have the opportunity to get the car on a lift.
I don’t know how or if this could also have a connection to the ringing/whistling above 4000RPM.. any idea if this could be connected ?
