[Z06] 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 ?
Former Law Dawg Moderator
Joined: Jan 2005
Posts: 29,434
Likes: 96
From: Eads, Tennessee
CF St. Jude Co-Organizer
St. Jude Donor '05 thru '24
More than likely you've got the "exhaust jingles". Penicillin will not fix it.
It's caused by the exhaust hangers/springs and there have been several write-ups here about a fix. Try a search. If I find them first I'll post a link.
It's caused by the exhaust hangers/springs and there have been several write-ups here about a fix. Try a search. If I find them first I'll post a link.
Former Law Dawg Moderator
Joined: Jan 2005
Posts: 29,434
Likes: 96
From: Eads, Tennessee
CF St. Jude Co-Organizer
St. Jude Donor '05 thru '24
Here's one fix.
http://forums.corvetteforum.com/show....php?t=1335263
It also couls be caused by the H-pipe. There are threads that discusses that remedy also.
Here's a bunch:
http://forums.corvetteforum.com/sear...archid=5719108
http://forums.corvetteforum.com/show....php?t=1335263
It also couls be caused by the H-pipe. There are threads that discusses that remedy also.
Here's a bunch:
http://forums.corvetteforum.com/sear...archid=5719108
Thread Starter
Instructor
Joined: Jul 2006
Posts: 228
Likes: 0
From: Southern Germany
Here's one fix.
http://forums.corvetteforum.com/show....php?t=1335263
It also couls be caused by the H-pipe. There are threads that discusses that remedy also.
Here's a bunch:
http://forums.corvetteforum.com/sear...archid=5719108
http://forums.corvetteforum.com/show....php?t=1335263
It also couls be caused by the H-pipe. There are threads that discusses that remedy also.
Here's a bunch:
http://forums.corvetteforum.com/sear...archid=5719108
Instructor
Joined: Jun 2007
Posts: 153
Likes: 1
From: Fairfiled CA>
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 ?
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 really is a problem with the springs that hold the exhaust pipes. Hopefully this will be the solution for the problem. 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 really is a problem with the springs that hold the exhaust pipes. Hopefully this will be the solution for the problem. 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 ?
Race Director
Joined: Jan 2006
Posts: 10,554
Likes: 33
From: Not on either liberal coast.
I would think those springs take a lot of abuse with the heat cycles. Maybe they should be changed automatically at a certain mileage...it would be cheap to replace and eliminate them as the source of the noise.
