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Old 10-05-2013, 12:51 PM   #1
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TJ stability over 60mph

Hello, I am looking for some helpful hints/recommendations on how to stabilize my 2001 TJ. I have recently replaced tires/stabilzers/traction bars/shocks/tie rods but at speeds over 65mph it becomes a nightmare to drive. This is my second jeep and there is no comparison. It does have a 3 inch lift and 31 inch tires.

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Old 10-05-2013, 12:58 PM   #2
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Hello, I am looking for some helpful hints/recommendations on how to stabilize my 2001 TJ. I have recently replaced tires/stabilzers/traction bars/shocks/tie rods but at speeds over 65mph it becomes a nightmare to drive. This is my second jeep and there is no comparison. It does have a 3 inch lift and 31 inch tires.
Pinion angles ok? Transfer case drop or SYE ? DS U-joints good?

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Old 10-05-2013, 12:59 PM   #3
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make sure that all your suspension is tight and torqued to specifications. I have a total of 6" and drive 70 with no problems
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Old 10-05-2013, 01:15 PM   #4
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More questions than answers/ also suggestions...PICS help a bunch......following up with what has already been said...how about tires balanced and flipped front to rear? Understand they are new but are you sure they are balanced> any chance that you have bent Rim? For everything thing that you have replaced it does start to sound something isn't "tight/ right" and causing the issue......
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Old 10-05-2013, 01:19 PM   #5
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Have you had an alignment recently? It helped mine 10 fold...
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Old 10-05-2013, 01:40 PM   #6
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make sure that all your suspension is tight and torqued to specifications.
X2....also what air pressure do you have in your tires and has it been aligned since the lift?
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Old 10-05-2013, 01:44 PM   #7
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Provide the following data:

Information on the aftermarket suspension and steering components. Don't leave out a thing and that includes the parts you just installed.

Caster and toe settings.
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Old 10-05-2013, 01:53 PM   #8
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Quote:
Originally Posted by 0803arty View Post
Hello, I am looking for some helpful hints/recommendations on how to stabilize my 2001 TJ. I have recently replaced tires/stabilzers/traction bars/shocks/tie rods but at speeds over 65mph it becomes a nightmare to drive. This is my second jeep and there is no comparison. It does have a 3 inch lift and 31 inch tires.
Explain beyond saying it's "a nightmare to drive".
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Old 10-05-2013, 01:56 PM   #9
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Caster and toe settings.
bingo.
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Old 10-05-2013, 01:58 PM   #10
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Get pics on a flat surface, showing your rake.
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Old 10-05-2013, 02:19 PM   #11
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Alignment done last week. I will have to get details on parts added. I know the shocks are bilistien, tie rods are heavy duty, steering stabilizer rancho will need to gather the rest of details. Lift was already installed. On details of "nightmare". It feels like I am constantly passing semis or a huge ping pong ball going back and forth. Even when parked I can really rock it side to side without effort.
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Old 10-05-2013, 02:22 PM   #12
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Alignment done last week. I will have to get details on parts added. I know the shocks are bilistien, tie rods are heavy duty, steering stabilizer rancho will need to gather the rest of details. Lift was already installed. On details of "nightmare". It feels like I am constantly passing semis or a huge ping pong ball going back and forth. Even when parked I can really rock it side to side without effort.
I see you have 2 posts so I can't make any assumptions on your experience.....

Have you checked the Swaybar? (named after the inventor, John Sway).
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Old 10-05-2013, 02:22 PM   #13
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Get pics on a flat surface, showing your rake.

Like this??
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Old 10-05-2013, 02:23 PM   #14
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Like this??
See that!? That's indicative of a severe caster problem.
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Old 10-05-2013, 06:11 PM   #15
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I had that problem since I first brought my 1997 Wrangler. If I went over 65, mine had a really annoying vibration. After three tire changes, it was finally corrected. I can only therefore assume that it was a balance problem straight from the factory. I recently had five new tires installed at a very reputable tire company. I had checked the internet thoroughly on these guys, and everyone was saying that they were the best ever. When, I finally got my tires installed by them, I could actually drive 90 MPH without any shaking, and it was like the Jeep wanted to go faster! Therefore, I must assume that those guys finally balanced my tires correctly. And, even the factory didn't do it right.

I also had that problem on my Mustang GTA, years ago. Someone told me that I needed my driveshaft balanced. So, I did it, and my Mustang drove like it was on air after 65MPH. Unfortunately, I got too crazy and I drove at 110MPH and blew my head gaskets. I had really tweaked it. It had a Holley four barrel, electric fuel pump, Edelbrook manifold, electronic distributor, dual exhausts, and octane booster. Lesson learned for a young and stupid kid on that one.

You can look at all these options, but I'm thinking that yours is a suspension problem with all the modifications that you have done to your suspension. It kind of sounds a little like death wobble.
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Old 10-05-2013, 07:33 PM   #16
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Alignment done last week.
ok fine, but what was the specs? what's caster, camber, toe, thrust angle, etc?
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Old 10-05-2013, 07:45 PM   #17
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pics

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Old 10-05-2013, 07:53 PM   #18
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Mine wandered badly when I first got it. Toe in was way out. Had a couple low tires. Replaced all sway arm bushings. And replaced drop Pitman arm with stock.
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Old 10-05-2013, 11:49 PM   #19
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He can't run a drop pitman arm with a Currie Currectlync steering setup.
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Old 10-06-2013, 05:36 AM   #20
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I'm leaning towards sway bar and tires having a "high spot"
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Old 10-06-2013, 05:39 AM   #21
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I'm leaning towards sway bar and tires having a "high spot"
He recently replaced tires so I doubt they have a "high spot" (if that means what I think) possibly not balanced correctly though.
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Old 10-06-2013, 05:50 AM   #22
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Check toe, possibly castors. Seems like you are describing front end weight going back and fourth between the tires. It's a Jeep man. It could be a rusty ashtray causin it...
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Old 10-06-2013, 10:32 AM   #23
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And what's the tire pressure. A lot of new tire get pumped up way too high.
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Old 10-06-2013, 11:02 AM   #24
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He can't run a drop pitman arm with a Currie Currectlync steering setup.
Big difference between can't and shouldn't....
Since he hasn't posted pics that show the other side who knows?

I was simply stating the issues that caused mine to wander.

OP is still being vague with details.
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Old 10-06-2013, 11:11 AM   #25
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The above advice saying this is a fixable problem is right on. I was driving with the flow of traffic yesterday afternoon in a remote area when I suddenly noticed with alarm that we were all doing 80 mph. My TJ is lifted 5", 35" MT/R tires on beadlock wheels, Currie suspension with OME shocks, and it was absolutely smooth even at that speed. My usual speeds are more like 66-65 mph so that mine was that smooth at even 80 mph means any properly set up Jeep can be smooth at any safe speed.
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Old 10-27-2013, 01:06 PM   #26
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No hands at highway speeds ( last 30 seconds on this video). 5" lift, 33" MT's, @65 MPH.
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Old 10-27-2013, 01:45 PM   #27
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Originally Posted by 0803arty View Post
Hello, I am looking for some helpful hints/recommendations on how to stabilize my 2001 TJ. I have recently replaced tires/stabilzers/traction bars/shocks/tie rods but at speeds over 65mph it becomes a nightmare to drive. This is my second jeep and there is no comparison. It does have a 3 inch lift and 31 inch tires.
I'm assuming you aligned and balanced the tires right?
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Old 10-27-2013, 02:17 PM   #28
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Big difference between can't and shouldn't....
Since he hasn't posted pics that show the other side who knows?
I'd like to see if he is running a dropped pitman arm or not.

Currectlync instructions
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Old 10-29-2013, 09:50 AM   #29
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I'd like to see traction bars on a coil spring suspension.
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Old 10-29-2013, 11:36 AM   #30
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One thing that's helped my TJ's stability is the addition of the Misch door armrests

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