Hi I need help! I just recently bought my first 86 rx7 bone stock and everything was good up until recently... It vibrates bad when going faster than 50, but the vibration reduces when car begins to roll to a stop. I read on this forum that it is probably my u joints... I also read here that you cant really replace them and that you need to replace the driveshaft. I also am kinda new to working on cars, this is my second car ever. So anyway to get familiar with the driveshaft i jacked up the car and took a look and i found out that is leaking the whole driveshaft is covered in oil. I also found my bushings to be in bad shape. So i would like to know if there is a step by step in removing the driveshaft and putting in a new one? Also if this has happened to any of you what were your experiences?

 

Probably the rear seal in the transmission leaking. Driveshaft is 4 bolts pull out. Easy.

 

Oh why thank you marclong! How would you go about checking the rear seal?

 

Just get a seal puller and take it out. Press the new one in gently. Use a socket or so. When you take the driveshaft out you will lose some fluid. So put a bucket under it.