I have the same shimmy i replaced the steering damper with a realy good rancharo shock 1 month ago problem was fixed now it is back. no lift kit. no oversize tires. it is a right hand drive for postal route. seems to get worse when tires get wore down, had them balanced shimmy still there. front end good and tight.
Hey, kinda late but, I would check the track bar. With engine running, have someone turn steering wheel back and forth (quarter turns are fine). watch the frame side (should be passenger side for right side drive) for up and down movement. If any is noticed, replace it.
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Re: 2005 jeep shimmy
Check front end again for any side play (small amounts at different locations can add up. Also check that steering box is not loose on frame.Check all bushings as well. If all else fails, if caster is adjustable have another degree or two put in. (positive)
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Check your ball joints. also, if the tires are somewhat worn many times they won't have enough rotating mass to overcome side harmonics and can shake but most oftern the joints are worn. No play is acceptable there.
It is unlikely to be the springs but more likely to be the ancillary suspension components such as the shock absorbers (suspension dampers) and either tired or worn rubber bushings on the the anti-roll (anti-sway) bar and control arms. Some cars are fitted with a steering damper arm and if this loses its damping effectiveness the steering will shimmy about.
Bounce on each corner of the front of the car. The body should rebound and come to rest within one and half cycles. If the car continues to bounce the shocks need replacing. Lift the front of the car and remove the front wheels. Inspect the rubber bushings of control arms and shock absorber mounts for wear and annular cracks. Use a pry bar to apply force in order to detect for undue play in linkages and control arms. Check for play in the steering control arms ball joints and in the steering rack itself, including the mounting bolts. Everything should be tight and firm. Anything obviously loose and/or worn should be replaced.
Check your track bar (panhard bar as some call it). It goes from the driver side frame to the passenger side axle (not from the steering box, but close to it). Have engine running, and turn steering wheel back and forth. If driver side of bar (frame side) moves up and down while steering wheel changes direction of rotation, replace it. Good luck.
Good excuse! You need to find a shop that does alignments and have special attention to caster. However, did the shake happen from when you first got it or did it develop over time? Check all front components for wear (by all I mean all) especially ball joints and steering damper (the sideways shock on the linkage) All can cause this condition.
I also have a 2004 Jeep Liberty, with 75,000 miles. Mine does exactly the same thing and is worse while braking. Nobody seems to know what it would be that I haven't already had replaced.... Any ideas? :)
Sounds like you may have some large tires on the Jeep. Check the stabilizer rod that attaches to the frame and down to the front differential. It may be loose or have worn bushings. This would cause the front end to shake at times. You probably get this problem to go away by applying the brakes a little or slowing down quickly to a certain speed. If that is the case check the rod and bushings. Good luck.
Ok, I figured out what was wrong with my 2005 Wrangler. By installing the coil spring spacers, I reduced the actual Caster angle of my front end. When I hit certain bumps at certain speeds, the front wheels would wobble back and forth violently as if i was pushing a bad shopping cart really fast. Anyhow, the dealer has replacement eccentric bolts to adjust the caster, but they didn’t stock them and they cost over $50.00. So, I opted to make my own off set washers to push the lower portion of the axle forward (gaining positive Caster). If you think this may help you, feel free to contact me at email@example.com .