As some of you may know - after my recent lift I had some vibrations in the rear. Those seem to all be sorted now with the new LCA to get pinion angles correct (will be getting an SYE and new DC driveshaft sometime).
I took it a week and a half ago to get aligned. After alignment, tire pressures set to 40 psi. Tracked straight as an arrow and drove smooth, up to about 55-60 MPH when I would get a slight shimmy in the steering wheel. This was not present prior to the alignment.
Since I didn't notice this until I was on a road trip, i decided to take it slow and drive under 55 (great gas mileage!). Driving over 60 or so could (but not always) cause a pretty bad shake, so I kept it slow.
Met up with a friend and he and I went over it all. It was all tight and nothing was loose, so drove it to a Jeep meetup and trail ride. No real change after the trail ride and all, and is basically okay as long as I keep it under 55.
Higher air pressures seem to help as well.
Took some video today to help diagnose the issue.
ZJ tie rod from passenger to driver is new, with new adjusting sleeve and tie rod end on driver side.
Ball joints on passenger side were replaced a year ago. Drivers ball joints are likely OE. (101000 miles on it). Have new ball joints to install, just haven't gotten around to it.
Also have new drag link, upper sleeve, and ball joint at pitman arm to install.
Do not have new steering stabilizer. It's likely bad as well, but I don't want to put a new one on to mask the issue.
Here's a video - pardon the whistle - camera was mounted just behind my license plate and I think the air through the holes was causing a whistle. This is with air pressures around 38 PSI. Usually run around 30.
You can see the vibes at around 20 seconds. This was a relatively minor occurrence - it has been much worse. Once it was so bad I had to slow down to like 45mph to get it to stop. Also later (around the 1:14 mark) on you can see some of the slight shimmy i was referring to.
Any pointers? Going to replace everything I have (drag link, ball joints) tomorrow I think, but am I overlooking something simple?
I took it a week and a half ago to get aligned. After alignment, tire pressures set to 40 psi. Tracked straight as an arrow and drove smooth, up to about 55-60 MPH when I would get a slight shimmy in the steering wheel. This was not present prior to the alignment.
Since I didn't notice this until I was on a road trip, i decided to take it slow and drive under 55 (great gas mileage!). Driving over 60 or so could (but not always) cause a pretty bad shake, so I kept it slow.
Met up with a friend and he and I went over it all. It was all tight and nothing was loose, so drove it to a Jeep meetup and trail ride. No real change after the trail ride and all, and is basically okay as long as I keep it under 55.
Higher air pressures seem to help as well.
Took some video today to help diagnose the issue.
ZJ tie rod from passenger to driver is new, with new adjusting sleeve and tie rod end on driver side.
Ball joints on passenger side were replaced a year ago. Drivers ball joints are likely OE. (101000 miles on it). Have new ball joints to install, just haven't gotten around to it.
Also have new drag link, upper sleeve, and ball joint at pitman arm to install.
Do not have new steering stabilizer. It's likely bad as well, but I don't want to put a new one on to mask the issue.
Here's a video - pardon the whistle - camera was mounted just behind my license plate and I think the air through the holes was causing a whistle. This is with air pressures around 38 PSI. Usually run around 30.
You can see the vibes at around 20 seconds. This was a relatively minor occurrence - it has been much worse. Once it was so bad I had to slow down to like 45mph to get it to stop. Also later (around the 1:14 mark) on you can see some of the slight shimmy i was referring to.
Any pointers? Going to replace everything I have (drag link, ball joints) tomorrow I think, but am I overlooking something simple?
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