Strange Vibration

[keithtaylor]

I have a 91 X that has just recently started giving me problems. It has about 193,000 on it and right now what is happening is when I get above 20 mph or so and then come up to a stop and hit the brakes, as the X comes to a stop I can feel a vibration coming thru the floor boards. It is not a brake issue they have all been recently replaced. As I proceeded to look under it I can see that it appears that the rear pinion seal is leaking. Is this going to cause a problem like this? Or is that just another problem that needs fixed along with this one. I really would appreciate all the help you guys can give me. I love the info on here. Thanks alot!

Keith

 

[jimbo74]

anymore info you can give us? a vibration could be a lot of things... off hand if its a hard stop it might be play in hte ujoint on the rear shaft....

 

[keithtaylor]

The only other info I can give is that I was under the car and there really seems to be no play in the U-Joints....I know it is tough to diagnose, but it is just like I can feel it vibrating right under my feet on the floor. And plus there is a definate sounds that goes with it. I mean I can hear it when the windows are down. I would love to give more info but I just cant think how else to describe it.

 

[jimbo74]

im now thinking tire balance or out of true tires... have these issues been addressed? aslo what kind of tires are they and what is there tread condition?

 

[keithtaylor]

I have Continental Contitrac SUV tires on it right now...the tread and everything seem to be just fine....but I am open for any suggestions...

 

[jimbo74]

we sell those tires at work, they arent that great.....
how is there balancing? have you tried rotating htem to see if the situation improves? aslo what about you wheel bearings?

 

[keithtaylor]

I will have to try rotation and then balance....I have not done anything like that yet...I appreciates the help!

 

[keithtaylor]

Well so far nothing is helping me yet....I am wondering if it could be a wheel bearing issue...I am going to be looking at that today....any more advice is appreciated!!!

 

[mnkyspnk]

I got the same problem

While stopping around 5 mile/hr my truck starts shaking until I step on the gas. It only does it once in a while. Have you found out what was wrong? Or does anyone have any ideas. It just starting shaking a couple of days ago. No mods, still have stock tires and I changed my brakes about 6 months ago.