Small rhythmic vibration
Thread Starter
Instructor
Joined: Feb 2005
Posts: 189
Likes: 132
From: Indianapolis, IN
Small rhythmic vibration
Hello all!
ive been noticing a weird vibration that has rhythm - it's probably a 2/10 and it used to just happen every so often but now it's happening more - it's almost like if I had a bent wheel I'd feel it every time the wheel does a full circle, however the rhythm is slower than that so I can't imagine it's in the wheels anywhere.
Any ideas?
ive been noticing a weird vibration that has rhythm - it's probably a 2/10 and it used to just happen every so often but now it's happening more - it's almost like if I had a bent wheel I'd feel it every time the wheel does a full circle, however the rhythm is slower than that so I can't imagine it's in the wheels anywhere.
Any ideas?
Le Mans Master
Joined: Oct 2014
Posts: 8,672
Likes: 2,726
From: Atlanta GA
Mine just started , when I put a new set of run flats and only on one road , very rythmic , I had them rebalance and it's not as bad but I can still faintly feel it
I know its the tires and I have a range device and I never had any vibration until input the tires on it at 34,000
might be a wheel as I hit a pretty bad pothole just before replacing my tires
Dave
Dave
I know its the tires and I have a range device and I never had any vibration until input the tires on it at 34,000
might be a wheel as I hit a pretty bad pothole just before replacing my tires
Dave
Dave
Safety Car
Joined: Mar 2004
Posts: 4,048
Likes: 1,476
From: South Florida
Sounds like it could be a Torque Converter issue. Common problem. A lot of material on here about it.
https://www.corvetteforum.com/forums...c-shudder.html
https://www.corvetteforum.com/forums...c-shudder.html
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Le Mans Master
Joined: Oct 2014
Posts: 8,672
Likes: 2,726
From: Atlanta GA
Sounds like it could be a Torque Converter issue. Common problem. A lot of material on here about it.
https://www.corvetteforum.com/forums...c-shudder.html
https://www.corvetteforum.com/forums...c-shudder.html
my C6 did the same thing to the point I though it was a wheel bearing that is why I had Discount rebalance them . Nit as bad now but on one stretch of road I travel I can still feel it
Dave
Safety Car
Joined: Mar 2004
Posts: 4,048
Likes: 1,476
From: South Florida
nah not this , it's a rhythm vibration that comes and goes like a harmonic vibration ...I have the range device so I know its not going in and out of lockup and it does not matter what gear it's in. It did not do it before i put runflats on it
my C6 did the same thing to the point I though it was a wheel bearing that is why I had Discount rebalance them . Nit as bad now but on one stretch of road I travel I can still feel it
Dave
my C6 did the same thing to the point I though it was a wheel bearing that is why I had Discount rebalance them . Nit as bad now but on one stretch of road I travel I can still feel it
Dave
List of things it could be:
-Torque Converter
-Torque Tube Bearings (usually accompanied by noise)
-Out of balanced tires(or poor job)
-Wheel Bearing(almost always accompanied by noise)
-Rear differential eLSD clutch issue(use of wrong gear oil or one that does not have the limited slip additive)
-Warped brake rotors(but you would feel a real bad shimmy when you press on the brakes)
Cruising
Joined: Mar 2018
Posts: 12
Likes: 3
From: New Paltz, NY
That is exactly how my A8 felt. Rhythmic in and out and had nothing to do with V4 mode.
List of things it could be:
-Torque Converter
-Torque Tube Bearings (usually accompanied by noise)
-Out of balanced tires(or poor job)
-Wheel Bearing(almost always accompanied by noise)
-Rear differential eLSD clutch issue(use of wrong gear oil or one that does not have the limited slip additive)
-Warped brake rotors(but you would feel a real bad shimmy when you press on the brakes)
List of things it could be:
-Torque Converter
-Torque Tube Bearings (usually accompanied by noise)
-Out of balanced tires(or poor job)
-Wheel Bearing(almost always accompanied by noise)
-Rear differential eLSD clutch issue(use of wrong gear oil or one that does not have the limited slip additive)
-Warped brake rotors(but you would feel a real bad shimmy when you press on the brakes)
My vote would be for a slightly bent rim… On the barrel side. Telltale sign was pot hole that was hit before the issues started.
unfortunately I know from experience.
Le Mans Master
Joined: Oct 2014
Posts: 8,672
Likes: 2,726
From: Atlanta GA
Lucky for me and against my wifes jugement at the time ( what do u need them for … lol ) I purchased a set of takeoffs just the week prior, I just was just not expecting to have to use them so soon .
Just after mounting the new tires and only on one stretch of road by my home I get the rhythmic on and off vibration at 60 to 65 MPH , I can switch to manual mode , drop it down a few gears and back up and nothing changes , pretty much rules out anything like torque tube , flex plate or torque converter as the change in engine and shaft speed do nothing to change the vibration .
I took it back to Discount Tire and asked them to check the balance again which they did , and now its still there a just a little bit … and only because I know what to look and feel for … so my money is on a bent rim now .
Been looking for some new 20 inch black rear rims …
The only reason I mention this is because everyone , with just cause, jumps on the transmission/torque converter bandwagon , I just want the OP and other to know that there are other casues of vibration other than the trans etc ….
Dave
Thread Starter
Instructor
Joined: Feb 2005
Posts: 189
Likes: 132
From: Indianapolis, IN
I agree , I am not one to jump to conclusions right away , I have not had or ever had any issues with my transmission ( I must be one of the few, don't jinx me lol lol ) and the problem started when I hit a pot hole on the highway really hard at 75 MPH and split the bead of my rear tire right at the bead lock, the jarring almost made me bite my tongue and I was really glad I had run flats because if not I would have been waiting for a tow truck
Lucky for me and against my wifes jugement at the time ( what do u need them for … lol ) I purchased a set of takeoffs just the week prior, I just was just not expecting to have to use them so soon .
Just after mounting the new tires and only on one stretch of road by my home I get the rhythmic on and off vibration at 60 to 65 MPH , I can switch to manual mode , drop it down a few gears and back up and nothing changes , pretty much rules out anything like torque tube , flex plate or torque converter as the change in engine and shaft speed do nothing to change the vibration .
I took it back to Discount Tire and asked them to check the balance again which they did , and now its still there a just a little bit … and only because I know what to look and feel for … so my money is on a bent rim now .
Been looking for some new 20 inch black rear rims …
The only reason I mention this is because everyone , with just cause, jumps on the transmission/torque converter bandwagon , I just want the OP and other to know that there are other casues of vibration other than the trans etc ….
Dave
Lucky for me and against my wifes jugement at the time ( what do u need them for … lol ) I purchased a set of takeoffs just the week prior, I just was just not expecting to have to use them so soon .
Just after mounting the new tires and only on one stretch of road by my home I get the rhythmic on and off vibration at 60 to 65 MPH , I can switch to manual mode , drop it down a few gears and back up and nothing changes , pretty much rules out anything like torque tube , flex plate or torque converter as the change in engine and shaft speed do nothing to change the vibration .
I took it back to Discount Tire and asked them to check the balance again which they did , and now its still there a just a little bit … and only because I know what to look and feel for … so my money is on a bent rim now .
Been looking for some new 20 inch black rear rims …
The only reason I mention this is because everyone , with just cause, jumps on the transmission/torque converter bandwagon , I just want the OP and other to know that there are other casues of vibration other than the trans etc ….
Dave
Le Mans Master
Joined: Oct 2014
Posts: 8,672
Likes: 2,726
From: Atlanta GA
I had a split in the bead and a bubble you could not miss but my rims looked to be ok . If it keeps bothering me I am going to take the wheels to a wheel repair place and have them spin them up
Dave
Melting Slicks
Joined: Jun 2012
Posts: 2,226
Likes: 1,029
From: Thomas Texas
Instructor
Joined: Dec 2010
Posts: 173
Likes: 13
From: London Canada
Hello all!
ive been noticing a weird vibration that has rhythm - it's probably a 2/10 and it used to just happen every so often but now it's happening more - it's almost like if I had a bent wheel I'd feel it every time the wheel does a full circle, however the rhythm is slower than that so I can't imagine it's in the wheels anywhere.
Any ideas?
ive been noticing a weird vibration that has rhythm - it's probably a 2/10 and it used to just happen every so often but now it's happening more - it's almost like if I had a bent wheel I'd feel it every time the wheel does a full circle, however the rhythm is slower than that so I can't imagine it's in the wheels anywhere.
Any ideas?
Did you ever figure it out?