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Old 04-03-2013, 07:51 PM   #1
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I'm in deep S*&T , need some help please

ok, long story short. Convinced my wife to sell her car for a new 2012, door arctic edition. Tough sell.......where she was concerend

Surprised her with a AEV 2.5" lift, fox steering stabilizer and 33" wheels with Nitto Terra grapler tires.

LOOKS AWESOME!!!!!!! (IN MY OPINION)

Here's the problem:
Under heavy acceleration the jeep swerves to the drivers side, hard. When you let off the pedal it swerves to the passenger side just as hard.

It's terrible to drive. Needless to say, it's an issue.

I have had it aligned. It did not help

Any ideas?

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Old 04-03-2013, 07:55 PM   #2
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Have you looked at your control arms and their brakets lately? Track bar and brakets? Post some pics up, that'll help diagnose the problem.

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Old 04-03-2013, 07:56 PM   #3
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take it back to the installer ..and get your $ back from them from not doing there job right !
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Old 04-03-2013, 08:00 PM   #4
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^^^^^^^^^^

Something was not done correctly on the install. Make them fix it.

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Old 04-03-2013, 08:00 PM   #5
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take it back to the installer ..and get your $ back from them from not doing there job right !
Good point... did you install it yourself? And if you got a shop to install it, did they order the parts or did you and bring them to the shop?
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Old 04-03-2013, 08:06 PM   #6
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Old 04-03-2013, 08:06 PM   #7
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Did they reconnect the track bar?
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Old 04-03-2013, 08:11 PM   #8
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that sounds like loose / missing track bar, pulling both directions like that, a little torque steer is to be expected from a live axle, but that's way too much the way you describe it
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Old 04-03-2013, 08:11 PM   #9
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Dang.

Something is obviously wrong. I would check the bolts for the track bar #1

Alignment could be way off. Does it track straight costing ?

Do you have alignment numbers ?
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Old 04-03-2013, 08:13 PM   #10
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I will get some pictures posted tomorrow. I bought the parts and took it to a mechanic I have used for years. He looked it over last saturday to make sure he did not miss something.
thanks for the ideas!
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Old 04-03-2013, 08:14 PM   #11
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What they all said.

Sounds like somebody forgot to torque everthing up when they put it back on the ground. You cannot torque the bolts down when it's up on a lift or on jacks.

You MUST, LET ME REPEAT THAT, YOU MUST torque everthing to specs, everything. With the vehicle on the ground. Check it twice, too. Use a torque wrench. Just making it tight isn't good enough on these Jeeps.

If your guy did the torqueing of the bolts in the air make him loosen the control arm bolts and track bars, shake the vehicle from each corner, then retorque everything. That unbinds any bound up bushings, which happens if you torque it all up in the air.

Since you got the AEV lift, consider getting the AEV geometry correction brackets, too.

I'd get my money back from the alignment shop, too. They boned you.
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Old 04-03-2013, 08:17 PM   #12
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Check that your tires aren't overinflated, and make sure they're balanced.

If that's all good, then he obviously--obviously--missed something.

Many of us install 2.5" lifts in our driveways with common handtools and have no problems. Myself included.

2.5" lifts are not enough of a geometry change to cause many problems.
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Old 04-03-2013, 08:17 PM   #13
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Lets back up a second, how severely does it swerve? If you let go of the steering wheel and it "drifts" to the right or left it might just be due to the tires. Your air pressure might be off or the fact that nitto grapplers just have an aggressive tread that are very sensitive to the crown of the road. Couple all that with the fact that if its a 2-door your going to get a twitchy steering that is really sensitive to cross winds.

I would obviously take it back to the installer and have them check it out. But if the alignment is perfect and nothing is messed up with the install then it could just be the factors I mentioned above.
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Old 04-03-2013, 08:34 PM   #14
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Where was it installed, by whom? Does the OP know what a track bar is?
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Old 04-03-2013, 08:36 PM   #15
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What Lou (Matador) said.

I was just going to add that, too. Check your air pressure. Lots of places air tires up to the recommended air pressure, which could be as much as 50 lbs or more.

Way too much for a Wrangler 2 door. My 32 inch Duratracs are set at 28.
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Old 04-03-2013, 09:04 PM   #16
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Yeah, mine was super squirrely on the over inflated tires from the tire shop. They were inflated over 40 and I keep them around 28-30 now. They still "track" more than smaller, skinnier tires would. Alot of roads are crowned pretty heavy and these always pull the jeep....
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Old 04-03-2013, 09:45 PM   #17
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I have found for me 28psi cold in my 315 duratracs is perfect. They heat up and expand to 30psi. Still a tad twitchy but to be expected from the 2 door. Don't get discouraged just right the wrong. You and she will love it when its fixed.
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Old 04-03-2013, 10:03 PM   #18
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Quote:
Originally Posted by O_M_Jeep View Post
that sounds like loose / missing track bar, pulling both directions like that, a little torque steer is to be expected from a live axle, but that's way too much the way you describe it
That's not really true. And I say that because if he was missing his track bar completely, there's no way he could even drive done the road. And I know this from experience. My track bar bolt broke going down the road once. No track bar = ABSOLUTELY ZERO steering. Literally had to turn the wheel a full 3/4 turn before I could steer.
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Old 04-03-2013, 10:16 PM   #19
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It's not hard to see a track bar bolt issue. Have the missus sit in the rig, turn the key on, but do not start it. With you looking at the trac bar, have her turn the steering wheel left and then right. There should be no play and no moving parts as she moves the steering wheel back and forth.
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Old 04-03-2013, 10:19 PM   #20
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It's not hard to see a track bar bolt issue. Have the missus sit in the rig, turn the key on, but do not start it. With you looking at the trac bar, have her turn the steering wheel left and then right. There should be no play and no moving parts as she moves the steering wheel back and forth.
^^^ good advice. I'd start here and by posting up some pics. I doubt the tire pressure would be causing swerving bad enough for you to post on the forum.... Just my personal opinion though.
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Old 04-03-2013, 10:54 PM   #21
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Last set of Terra grapplers I had on my CTD made it float around like it was on marbles till they got wore in at about 500 miles. It was downright un nerving at times and would pull to the right under torque and drift to the left under brake.Lowering psi helped ta bunch but it was still scary till they got scrubbed in.

If you still have stock tires/wheels I would toss them on and go from there.
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Old 04-03-2013, 11:05 PM   #22
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$10 says it still has the stock bolts in the suspension, and your upper track bar bracket has some play.
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Old 04-03-2013, 11:23 PM   #23
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Quote:
Originally Posted by PStov98TJ View Post
That's not really true. And I say that because if he was missing his track bar completely, there's no way he could even drive done the road. And I know this from experience. My track bar bolt broke going down the road once. No track bar = ABSOLUTELY ZERO steering. Literally had to turn the wheel a full 3/4 turn before I could steer.
You know there is a track bar in the rear as well? Not sure which he was referring to
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Old 04-03-2013, 11:32 PM   #24
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Quote:
Originally Posted by PStov98TJ View Post
That's not really true. And I say that because if he was missing his track bar completely, there's no way he could even drive done the road. And I know this from experience. My track bar bolt broke going down the road once. No track bar = ABSOLUTELY ZERO steering. Literally had to turn the wheel a full 3/4 turn before I could steer.
Could be that the rear track bar is the one that's not connected.
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Old 04-03-2013, 11:55 PM   #25
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Quote:
Originally Posted by derf View Post
Could be that the rear track bar is the one that's not connected.
Quote:
Originally Posted by GoldenSahara00 View Post
You know there is a track bar in the rear as well? Not sure which he was referring to
Good points. Haha I've had a tough week of tests so my brain isn't really on. The rear track bar actually sounds very likely now that y'all mention it. I don't have experience what it's like to have no rear track bar. And I'd rather not have had first hand experience with missing the front either, but my girlfriend and I are safe and didn't get hurt so I guess thats what counts. Haha sorry for the rant on that, still have a little PTSD sorta from hearing the "tink! tink! tink!" going down the road and just knowing I didn't have a front track bar attached anymore. Not fun.
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Old 04-04-2013, 05:25 AM   #26
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Quote:
Originally Posted by ultraz View Post
ok, long story short. Convinced my wife to sell her car for a new 2012, door arctic edition. Tough sell.......where she was concerend

Surprised her with a AEV 2.5" lift, fox steering stabilizer and 33" wheels with Nitto Terra grapler tires.

LOOKS AWESOME!!!!!!! (IN MY OPINION)

Here's the problem:
Under heavy acceleration the jeep swerves to the drivers side, hard. When you let off the pedal it swerves to the passenger side just as hard.

It's terrible to drive. Needless to say, it's an issue.

I have had it aligned. It did not help

Any ideas?
Think about this for a minute...under hard acceleration it pull to driver side. under deceleration is pulls to passenger side.
The engine torque is applied to the rear axle, so; that is where I would start to look for loose fasteners. Look real close at all the control arms.....in particular on the driver side. But if you find one loose, don't stop there, check all of them.
I have had similar reactions on leaf spring suspensions with loose u-bolts or broken center bolts.
If you paid a mechanic to install your lift; I would go back to him and make him loosen ALL of the suspension bolts with the vehicle weight on the springs, and then re-torque ALL of then to specs.
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Old 04-04-2013, 01:47 PM   #27
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Thank you for all of the tips. Some replies:

Tires are at 30PSI.
Much more severe than typical drift. I also own an 83 CJ7, lifted with wheels and tires.

At the present time the CJ is easier to drive.

Last night we jacked up the jeep taking all of the weight off of the rear axle. Nothing loose.

We did measure the disctance between the wheels on the left side versus the right side (once we lowered it back down)

It seem like the right side is about 3/8 to a 1/2 inch closer together than the left.

Would this do it and if so can it be corrected?
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Old 04-04-2013, 01:59 PM   #28
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Interesting... are you sure nothing was loose at all? Not trying to question you.. but I doubt it'll be that squirrelly if there was nothing loose on there at all.
That can be corrected with an adjustable track bar. And if the rear end is off by that much it is likely that the front will also be off by that much as well but in the opposite direction.
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Old 04-04-2013, 08:20 PM   #29
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Last night we jacked up the jeep taking all of the weight off of the rear axle. Nothing loose.
letting the axle hang takes the weight off the tires, but not off of the track bar and suspension, the weight of the axle and tires put pressure against the control arms, track bar and sway bar. it's better if while lifting and lowering you try to check for movement that is contraindicated by the jack motion, not trying to talk down to you at all, but please be sure to use jack stands while cycling the suspension so you can really tug and shove on the axle and components. Front is easier to check, turning the wheels left to right, but should be checked the same way as well.
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Old 04-04-2013, 08:37 PM   #30
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Think about this for a minute...under hard acceleration it pull to driver side. under deceleration is pulls to passenger side.
Maybe some torque steer under hard acceleration with an out of spec lift kit. Never seen torque steer under deceleration. Maybe over correction which is worse and an indication of bad driving ability. Could be wrong about this if the lift is stupid.

I have had many experiences observing the recklessness of over correction, the results of which have never been good.

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