i tried searching around but couldnt find any good answers of what might be the cause...today when i jumped in my car and started to drive everything seemed fine. drove smooth, and also drove smooth the day before. i get the the bank and i'm sitting in the drive-thru teller waiting to deposite some checks. i put my ebrake up, but forget it is up when i go to take off. as i start to let out the clutch i notice the car doesnt go so im like "woops forgot the ebrake was on." put the ebrake down and drive off. once i get on the high way and start to get some speed my car starts vibrating like crazy. doesnt do it in 1st and 2nd very much (might but i cant tell), but once i get into 3rd and 4th and higher i really feel it. seems to really come on around 35mph or so. it doesnt only vibrate under heavy acceleration. it will also do it when i lightly press the gas to accelerate. it only does it under acceleration too. if i keep it in gear and let off the gas to let it rev down then the vibration stops. if i press in the clutch and let it coast there is no vibration. when i sit in neutral and rev there is no vibration. everything is smooth until it is in gear and i'm accelerating. any ideas? could of i damaged something in my differential when trying to start going with the ebrake up?

 

Is it engine vibration or something you can feel in the rear? Or is it coming through the steering wheel?

kind of think it might be pad related if handbrake caused it but guessing it will be something else... my diagnostic skills aren't very tuned compared to other site members...

 

the steering wheel doesnt vibrate at all. the whole car is what starts to shake. as the vibration comes on you can feel it in the whole car but the steering wheel remains still. i feel like it is coming from the rear, but it is kind of hard to tell since the whole car shakes. however, im almost certain it is coming from the rear.

edit: i've done it a few times before where i tried to go forgetting i put my ebrake up. i'm sure it cant be good on the differential, but nothing like this ever happened after doing it before. so i am unsure if that is what caused it or if it is something else, but it didnt start happening till after i left the bank.

edit again: i am also on stock suspension. not lowered (yet). all that is done to the car is some 18" work meisters.

 

Pitted CV axle buckets will cause this. You can save yourself some money by just swapping them (the CV buckets) left to right.

 

Pitted CVs 100%.

 

if your car is lowered i might suggest getting half shaft spacers. i swapped my cv buckets only to pit the other sides of the bucket as well. =D