Help diagnosing - pulling left - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 7 Old 01-16-2017, 12:51 PM Thread Starter
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Help diagnosing - pulling left

Well, I'm not even sure saying that it "pulls left" is accurate. It feels more like the rear end is pushing right. When I pull away from a complete stop, it feels like the right rear is trying to come around. If you've ever seen a car with a bent frame "crabbing" down the road, that's what it feels like its doing. And I have to counter it with a slight steer to the right. If I just hold the steering wheel straight, it will begin to veer left. There is zero steering movement when it veers left. In fact if I let go of the steering wheel, it will remain dead straight. It does this only when taking off from a full stop, or when I am already rolling and accelerate hard. All other times it just tracks nice and straight no problem.

It just started doing this recently. I have not done any mods in a long time (a year or more). A month ago I had it in a shop to replace a leaking seal and bad bearings in the right rear axle. So makes me wonder if this new development is somehow related?

Anyone have any thoughts on this?
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post #2 of 7 Old 01-16-2017, 01:42 PM
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Quote:
Originally Posted by N2rock View Post
Well, I'm not even sure saying that it "pulls left" is accurate. It feels more like the rear end is pushing right. When I pull away from a complete stop, it feels like the right rear is trying to come around. If you've ever seen a car with a bent frame "crabbing" down the road, that's what it feels like its doing. And I have to counter it with a slight steer to the right. If I just hold the steering wheel straight, it will begin to veer left. There is zero steering movement when it veers left. In fact if I let go of the steering wheel, it will remain dead straight. It does this only when taking off from a full stop, or when I am already rolling and accelerate hard. All other times it just tracks nice and straight no problem.

It just started doing this recently. I have not done any mods in a long time (a year or more). A month ago I had it in a shop to replace a leaking seal and bad bearings in the right rear axle. So makes me wonder if this new development is somehow related?

Anyone have any thoughts on this?
Hmm. My first thought is a pressurized steering stabilizer but it did not do this before. My second thought is torque steer as highlighted above. Torque steer can be caused by the track bar mounting point on the front axle and drag link pivot on the spindle not being on the same plane; but again it did not do this before.

Since you had work done on the rear end and you say it feels like the issue is in the rear I would check a few things. Check the track bar bolts are tight. Make sure the track bar wasn't moved to a different height if you have multiple mounting points. Make sure both axles are centered in the frame at ride height and the wheelbase is the same on both sides. I assume you have adjustable bars or relocation brackets.

Torque steer is usually due to something loose or improper geometry. I have seen radial tires pull from a bad tire or wide tires that tend to dart around. "C's" being welded on out of phase, bent axle, worn ball joints...... Anyway my first thoughts.

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post #3 of 7 Old 01-17-2017, 12:22 PM Thread Starter
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Thanks MoTech... And yes I do have adjustable trackbars. I'll start there.
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post #4 of 7 Old 01-17-2017, 02:02 PM
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I had something similar. turned out to be wasted joints in the rear control arms.
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post #5 of 7 Old 01-17-2017, 04:14 PM Thread Starter
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I had something similar. turned out to be wasted joints in the rear control arms.
Something else for me to check. Thanks.

I'm approaching 100k miles. So that very well may be it.
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post #6 of 7 Old 01-22-2017, 12:26 PM
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I agree check control arm bushings
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post #7 of 7 Old 01-24-2017, 09:19 PM
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Bad track bar bushings caused something similar in a yj and a bronco I have. Fronts are pretty easy to feel through the steering wheel but not so much for the rears.

Is there a clunk under acceleration? Control arm bushing or a loose control arm bolt could manifest in the same way as previously stated.
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