Vibrations in 4x4

[Waddinggiraffe]

I have a 1995 dodge 1500 single cab sort bed.. it’s Cummins swapped and has a small lift/level.. I’ve recently noticed it vibrating quite bad in 4x4 when accelerating/decelerating and can not seem to locate the problem.. I’ve checked all u-joints, driveshafts are balanced, and I had my transfer case checked but no issues were found. Wondering if anyone ever had similar problems and what the fix was.. also, my passenger side axle seal is leaking oil even after I replaced the seal not long ago, could it have something to do with the vibration I’m getting?

 

[Dean2]

You have a Cummins motor stuffed into a 1500. Anyone who knows how to do that right would have never done it in the first place. They would have used a 2500 or 3500 for the transplant. The odds that whoever did the transplant F'ed up a bunch of stuff is very high. With that much weight on the front end, the list of things that could cause a vibration are endless. It will be a long process of elimination. Start at the front and work back, keep detailed notes.

If your axle is leaking after replacing the seal, pull the axle and look for scoring, wear etc.

 

[Daw14]

Search Chassis ears , or noise finder on amazon and a bunch come up for around $50.00
I have not used these sold here ,but have experience with others and I think they are worth every nickel .
These can prevent a lot of frustration .