Thumping and vibration in floorboard (left side)
Need a little help and I'm hoping some of you can throw out a few ideas. I've been getting a thumping sound when going about 30-35mph that feels primarily on the drivers side. The truck was looked over a few months ago and I had the right side drive shaft replaced. The sound was present before...seemed to taper off a bit and now is back like before. I was out today and broke a sway bar link on the left side so I'd guess that rules out the bushings being an issue since it's completely disconnected. I'm going to replace all of the bushings and put two new links on the sway bar next weekend but would you all think the other drive shaft is going as well? I know it's about impossible to diagnose vehicle issues like this over the net without seeing it, but I'm hoping someone had some similar issues and might be able to give suggestions as to what their issue was.
Also, I'm considering replacing the drive shaft on my own but I'm not sure what I need to be looking for. Any tips there as well?