Vibration

Thanks f9k9. They do have a few cracks. As far as a shudder versus a vibration, i'm probably not smart enough to tell the difference. I can really feel it in the steering wheel and sitting in the pass seat.

Zane,

If your bushings are fine, I would check the tightness of the trackbar and your steering components.

Greg, my steering components seem fine. The rear track bar isn't what I would call "loose" but it does rotate on the ball joint pretty easy at a level stance.

jeepcaptain said:

Thanks f9k9. They do have a few cracks. As far as a shudder versus a vibration, i'm probably not smart enough to tell the difference. I can really feel it in the steering wheel and sitting in the pass seat.

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OK, the shudder is not in the equation because, you would feel it immediately from 0-whatever speed. Don't knock your intelligence and call yourself "not smart enough". I am a newbie after 4 yrs of chasing stuff. We all keep evolving and learning. I jumped on the bushings because you said that it happened in "2wd".

Back to basics. I understand you to say that it was fine before and recently developed this problem? It starts at a certain speed and as you accelerate out of the problem speed area, it stops.

Have you already checked all fasteners and made sure that they were at the proper specs? I often blow this off because I checked it 2 weeks ago and I have assumed everything is still okay.

vibration under acceleration is usually caused by a rear driveshaft issue, either bad angle, bad u joint, out of balance etc.

I would rotate the tires and see if that fixes the vibration, it could be that a tire lost its balance.

Eric said:

vibration under acceleration is usually caused by a rear driveshaft issue, either bad angle, bad u joint, out of balance etc.

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This, possibly caused by bad CA bushings.

When you accelerate, your rear axle may be rotating due to worn upper rear CA bushings. I had the same issue before I started running Johnny Joints. Sometimes would make a popping or rattling sound when changing between reverse and first gear or vice versa.

Joey

Thanks again everyone for all of the good directions to go. It just started a few weeks ago and appears to be getting worse. As soon as you let off of the throttle it goes away so i'm leaning towards a linkage problem and/or the pumpkin not in the correct angle with the transmission. I wonder if worn out shocks would cause enough change in angle to cause this. Thanks again. Will let ya'll know what I find in the coming days. Roll Tide!!!!!

i had the same thing happen..... have you checked your u-joints?

I had to do some serious searching for it but found a slightly worn u joint at the back end. It had a very, very small amount of play but it sure was causing a lot of vibration. Thanks again for everyone's help!

jeepcaptain said:

I had to do some serious searching for it but found a slightly worn u joint at the back end. It had a very, very small amount of play but it sure was causing a lot of vibration. Thanks again for everyone's help!

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Sweet!