Unsettling sway or lift at times when driving - Feels top heavy, high pucker - JeepForum.com
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post #1 of 52 Old 10-18-2019, 03:36 PM Thread Starter
uw91
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Unsettling sway or lift at times when driving - Feels top heavy, high pucker

At speeds of 40mph and over I at times get a pretty puckersome feeling that I'm about to lose control on the road. Feels almost like the Jeep lifts to one side and if I try to correct even the slightest it may go over. This of course doesn't happen;


but think of it like hitting a bump and the Jeep lifts into the air with the wheels still on the ground. I'll hit a slight bump and the CJ will move slightly but give me the feeling that if I try to correct it won't be fun.

EDIT: I don't have a lift on the Jeep. Mechanic thinks there may be a 2.5" lift, if any.

I've put new steering throughout the Jeep, along with shocks and the H1 steering box. I never felt this in my old 85 and I'm wondering if there is something that is simply misbehaving in the front of the Jeep.



Has my mind simply forgotten the day in the life driving or is something else a bit wonky? My hard top not fastened down enough to the windshield frame and causing lift? (haha) Bad shocks? Bad springs?


Any ideas would be awesome because I hate thinking I'm going to have to pucker on a quick trip to town.


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post #2 of 52 Old 10-18-2019, 03:57 PM
jurgen24
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Unsettling sway or lift at times when driving - Feels top heavy, high pucker

Replaced Ball joints?
Front caster angle?
Toe in measurement?
Picture of draglink?


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post #3 of 52 Old 10-18-2019, 04:09 PM Thread Starter
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Quote:
Originally Posted by jurgen24 View Post
Replaced Ball joints?
Front caster angle?
Toe in measurement?
Picture of draglink?


Sent from my iPhone using Tapatalk

Ball joints replaced.
Not sure on caster angle.
Toe in should have been set to factory after last repair a month ago when steering was redone.
Pictures attached.
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IMG_20191018_140518.jpg   IMG_20191018_140503.jpg   IMG_20191018_140458.jpg   IMG_20191018_140445.jpg  

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post #4 of 52 Old 10-18-2019, 06:41 PM
StoneTower
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Those look like new tie rod ends to me. Ball joints hold the knuckles on.
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post #5 of 52 Old 10-18-2019, 06:52 PM
GP_Pete
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Your sway bar links are too short for that set up. You def have a lift because those are atock length and your sway bar is tilted down. Could be some of that problem. Get some extended links and seenif it helps a bit.


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post #6 of 52 Old 10-18-2019, 07:13 PM
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Get a good digital alignment, caster should be 3 to 5 degrees. Post it up so we can get an idea you are set at. What size tires are you running? Run about 20 to 25 psi. I messed with my pressures and mine is good around 23-24 psi, on 33s.
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post #7 of 52 Old 10-18-2019, 08:34 PM Thread Starter
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Quote:
Originally Posted by RiverandSand View Post
Get a good digital alignment, caster should be 3 to 5 degrees. Post it up so we can get an idea you are set at. What size tires are you running? Run about 20 to 25 psi. I messed with my pressures and mine is good around 23-24 psi, on 33s.
I'm running 31" BFG KO2s and I have them around 32 psi. Shoot, may be part of the prob.

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post #8 of 52 Old 10-18-2019, 09:58 PM Thread Starter
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Quote:
Originally Posted by GP_Pete View Post
Your sway bar links are too short for that set up. You def have a lift because those are atock length and your sway bar is tilted down. Could be some of that problem. Get some extended links and seenif it helps a bit.


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Any recommendation? It looks like I need another 3" to not have the bar face down, right? And I imagine they are easy to swap out on both sides.

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post #9 of 52 Old 10-18-2019, 10:59 PM
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Quote:
Originally Posted by GP_Pete View Post
Your sway bar links are too short for that set up. You def have a lift because those are atock length and your sway bar is tilted down. Could be some of that problem. Get some extended links and seenif it helps a bit.
and why is this a problem since a sway bar use rotational torque to off set movement?
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post #10 of 52 Old 10-19-2019, 01:14 AM
StoneTower
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I thought the sway bar links needed to be vertical. His look to be angled back.
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post #11 of 52 Old 10-19-2019, 01:48 AM
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Probably unrelated but I think your spring clips are incorrectly installed.
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post #12 of 52 Old 10-19-2019, 06:00 AM
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Maybe sway bar bushings? The end link on the driver's side looks vertical while the end link on the passenger side looks tilted.

Also - How are the body mounts? Leaf Spring shackle bushings OK? Wheel bearings in good shape?

Almost sounds like the death wobble on a family member's '99 Grand Cherokee.

I think lowering your tire pressure some may help - maybe 28 psi - but I wouldn't go lower.

Are you running LT tires? These bounce more than a P metric tire due to stiffer sidewalls.

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post #13 of 52 Old 10-19-2019, 06:01 AM
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Doesn't look like much lift but can see you may have some extended shackles up front that will screw with your castor angle. And there are no wedges between the spring and axle pad to correct castor if needed.
Bad upper and lower ball joints and poor castor angle can make driving a CJ a chore. Always wanting to dart around from left-to-right or right-to-left.

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post #14 of 52 Old 10-19-2019, 08:20 AM
Hurricane4
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OP stated the following has been replaced:

New steering throughout the Jeep, along with shocks and the H1 steering box.
Ball joints replaced.
Not sure on caster angle.
Toe in should have been set to factory after last repair a month ago when steering was redone.

Plenty more to check and possibly replace.

"The unbelievable we can do immediately . . . the impossible just takes a little longer."
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"Success is not final. Failure is not fatal. It is the courage to continue that counts"
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Jeeps I Have Owned in Year Order:
'61 CJ5, '63 CJ6, '78 CJ5, '79 CJ5 (Current), '79 CJ7 & '86 CJ7.
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post #15 of 52 Old 10-19-2019, 08:41 AM
DougE
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Air pressure for the stock size tires is 24 psi. There's no need to go any higher for larger tires. The caster spec is 5* to 7* and being on the higher side is better for directional stability with the down side being more steering effort at low speed.

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