Re: 90 4.0 Ranger vibration problems
I had a mechanic look at my truck, and the rear axle bearing was bad, which is what was causing the vibration, they told me. However, after they replaced it, I was told by other people that axle bearings just make noise, not vibration. However, they also replaced my universal joints, and there is a noticeable difference now. The low-pitch rumble is gone, and the vibration has improved, but is still present.
Between 50-60 it is definitely there mostly all the time. 65-75 it seems to subside, and the highway ride is the best at these speeds. However, above 75 the vibration is very bad, and the entire cab shakes.
Everyone keeps telling me it's tires, but I"ve had them balanced a bunch. Here are the possibilities I've come up with thus far:
1) Get a dynamic wheel balance (costs money) from discount tire and see if that solves the problem.
2) Replace i-beam suspension bushings (4) with urethane harder bushings.
3) The problem is that all the parts in the front are loose, and the vibration will continue unless every front suspension part is replaced.
Any thoughts/suggestions? Please share....