Lt1Powerz

iTrader: (1)

Okay so here's the deal, this has been going on for a while, its just been getting progressively worse. At cruising speeds on the highway i can do 60-65mph no problems but under any kind of acceleration at or above the mentioned speed i get a shimmy in the whole damn car, not just the steering wheel. Feels like a bearing going out but they are all good. im running stock suspension and stock driveshaft/rear end, maybe that has something to do with it? But i cant really explain it.

lets just leave it at this, any kind of shaking while racing never feels good. This shaking on a scale of 1-10 is about a 7.

Any ideas? Its kind of hard to explain, i wish i had something to compare it to. its like sitting on a washing machine with one leg too long/short so it wobbles almost... And it gets worse the faster i go.

zachrywd_01TA

I would automatically think out of balance tire, and / or out of alignment... But just under acceleration. Motor / Tranny mounts maybe?

Lt1Powerz

iTrader: (1)

its not just under acceleration its just worse under acceleration.

And its not the alignment/tires, i have checked that 5 times... Trust me i have receipts for proof of that lol

Dope

iTrader: (2)

If you have a vibration that gets worse under acceleration, first thing I'd check is the u-joints. Do you have a click/ping when you're at a stop and you start to go forward/backward? If not u-joints, check engine and tranny mounts. If you have the stock trans mount then that is a common problem, though usually you can tell when they break because the shifter bounces all over the place (assuming you have an M6, doesn't say in your sig).

Dope

JD_AMG

^ This, plus the drive shaft may be out of balance, the wheels could be out of balance(or bent), the rotors could be warped.

jlasserton

Definitely check the alignment of your tires...You might want to get them balanced as well... That usually takes care of the shaking I get with my car.

eseibel67

iTrader: (10)

If you've had the wheels balanced 5 times, and the wheel bearings are good, I'm thinking driveshaft.

jheath5193

mine kinda shakes at around 65 and 70, but it feels like its coming from underneath console, yours similar?

marthyh

Any loose suspension bolts,worn suspension rubbers like from lower control arms?

Anything in the drivetrain suspension could be possible,if you say under load I would start looking in the rear part under the car?

or indeed bent wheel but on the inside ,so not visible obviously...

PadenAlbin

Not too long ago my torque arm became extremely loose, causing the car to shake horribly at any rpm.

AGB1976

I had a pretty bad shake under acceleration and at highway speeds. Turned out one of the lower control arm bolts had completely come out. It had been that way for some time before someone else got in the car with me and freaked out from the swaying motion. Popped a new bolt and nut in and it stopped shaking.

easymech2000

hey guys im having a very simular problem but to add to it ive changed rear control arms rear panhard ros rear sway bar adjusted pinyon angle changed torque arm and got better accept under WOT can anyone help