I'v been havin wat I like to call Bouncy Vtec for about a year now, when I go into vtec.. The Tach bounces back n forth all the way up, but engine sounds strong.

So I thought it was a Trany ground problem.. no.

Last night I casually shifted in first, and there was a two second pause & a clunk in the transmission, before the clutch engaged & i took off. And all of a sudden.. the car felt like it was driving stronger.
Like I actually had BOTH of my drive shafts spinning.. even tho i do not have LSD.

Maybe I'v been driving with only one shaft this whole time? because I could feel a difference. So I took it out on the highway and sure enough.. that Bouncy Vtec problem was gone.

So I don't know if a differential was locked up or something inside of there was stuck, & whacking out the speed sensor. I'm not sure, but the problem I was having is definitely fixed.

So i'm wondering if the transmission is toasted, or needs to be opened.

Just for reference I have replaced both shafts & shaft bearing withing the year.

 

you cant run off one axle, if the diff was broke and only one axle was spinnig the car wont move unless u have lsd, u prob. have a dizzy/or ground problem if the tach is jumping around