Ok.. I havent even modded my darn Jeep and I am getting Vibes :chair: :evil2: .
I checked the U-Joints, they seem ok. Only thing out of wack I can see, is a pinched sway bar bushing. Everything else looks tight and good-to-go.
Jeep Background: Transmission was replaced 5,000 miles ago. I am also getting some slight bump steer. The wheel doesnt turn all the way around, but it does feel like the steering wheel looses connection with the Jeep when hitting larger bumps at high speed, untill the suspension stops jouncing. Seems like it "reconnects" when the suspension settles. I think its normal personally, but I was told to mention it
Vibe background: Front MT/Rs were cupped REAL bad, I put them on the rear 1,500 miles ago. Before I put them on the rear, I was getting some nasty vibration sounds from the brakes but no felt vibes. The tires now appear to be cleaned up. They are not visibly cupped like before. I did a couple 10 second burn outs in 2nd on my slanted driveway during a torrential downpour we just got, to make sure they are evened out. They ARE still pretty noisey, the rears make a loud whomp whomp supper swamper type noise that is audible untill about 25 on my Rubicons radio. No noise from the fronts at all.
The Vibes are intermittant. One day they will be horrid (Enough to vibrate the seat) the next I wont feel any at all. Most the time I feel a small Whuump Wuuump vibe at highway speeds (~60). It sounds and feels almost like somethings out of round. The vibes are in the FLOOR and seat, NOT steering wheel. The noise and vibration is SLOWER than the loud azz whomp of the MT/Rs. The vibes at highway speeds arent bad at all, I could live with them.
The bad vibes are at 8-14mph. Decel from 15mph to 8 mph (either 1st or 2nd) gets bumpy enough jar my teeth some days. It also does it accelerating, or cruising, between that speed in either 1st or 2nd, but I notice it more decelerating. The vibes are bad enough to make heatshields go nuts, things in the jeep, like wrenches etc., vibrate audibily against each other, but nothing is felt in the steering wheel. The best way to descibe it, is running over a rumble strip between 8-14mph, but not as bad. Again, I also feel the vibration in the seat. The Jeep vibrates like a rumble strip, but the seat vibe feels like something way out of round. Does that make any sense?
During the highway speed vibes, putting the jeep into 4wd does not make the vibes go away, but it does calm them down some. It seems to "smooth out" the out of round feeling, and makes it less severe, but the problem still exists.
I am thinking this is a rear tire issue. Maybe the rear MT/Rs were just way too far gone, and the tire has worked itself out of round. You all think this is a tire issue, or should I be looking elsewhere? I thought U-Joints first, but they seem ok, than tires, but they look smooth now, not cupped. Then I thought trans again, but it does it in 1st AND 2nd, not just 1 gear. I cant really take it to the dealer untill I KNOW whats wrong, since they cant even fix a gushing oil leak thats starting them in the face...
Thanks guys..
I checked the U-Joints, they seem ok. Only thing out of wack I can see, is a pinched sway bar bushing. Everything else looks tight and good-to-go.
Jeep Background: Transmission was replaced 5,000 miles ago. I am also getting some slight bump steer. The wheel doesnt turn all the way around, but it does feel like the steering wheel looses connection with the Jeep when hitting larger bumps at high speed, untill the suspension stops jouncing. Seems like it "reconnects" when the suspension settles. I think its normal personally, but I was told to mention it
Vibe background: Front MT/Rs were cupped REAL bad, I put them on the rear 1,500 miles ago. Before I put them on the rear, I was getting some nasty vibration sounds from the brakes but no felt vibes. The tires now appear to be cleaned up. They are not visibly cupped like before. I did a couple 10 second burn outs in 2nd on my slanted driveway during a torrential downpour we just got, to make sure they are evened out. They ARE still pretty noisey, the rears make a loud whomp whomp supper swamper type noise that is audible untill about 25 on my Rubicons radio. No noise from the fronts at all.
The Vibes are intermittant. One day they will be horrid (Enough to vibrate the seat) the next I wont feel any at all. Most the time I feel a small Whuump Wuuump vibe at highway speeds (~60). It sounds and feels almost like somethings out of round. The vibes are in the FLOOR and seat, NOT steering wheel. The noise and vibration is SLOWER than the loud azz whomp of the MT/Rs. The vibes at highway speeds arent bad at all, I could live with them.
The bad vibes are at 8-14mph. Decel from 15mph to 8 mph (either 1st or 2nd) gets bumpy enough jar my teeth some days. It also does it accelerating, or cruising, between that speed in either 1st or 2nd, but I notice it more decelerating. The vibes are bad enough to make heatshields go nuts, things in the jeep, like wrenches etc., vibrate audibily against each other, but nothing is felt in the steering wheel. The best way to descibe it, is running over a rumble strip between 8-14mph, but not as bad. Again, I also feel the vibration in the seat. The Jeep vibrates like a rumble strip, but the seat vibe feels like something way out of round. Does that make any sense?
During the highway speed vibes, putting the jeep into 4wd does not make the vibes go away, but it does calm them down some. It seems to "smooth out" the out of round feeling, and makes it less severe, but the problem still exists.
I am thinking this is a rear tire issue. Maybe the rear MT/Rs were just way too far gone, and the tire has worked itself out of round. You all think this is a tire issue, or should I be looking elsewhere? I thought U-Joints first, but they seem ok, than tires, but they look smooth now, not cupped. Then I thought trans again, but it does it in 1st AND 2nd, not just 1 gear. I cant really take it to the dealer untill I KNOW whats wrong, since they cant even fix a gushing oil leak thats starting them in the face...
Thanks guys..