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Old 12-01-2018, 04:31 PM
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Exclamation issue with traction/stability controll?

installed my lift about a year ago, mopar 4inch with JKS front track bar, AEV drop brackets on a 17 JK.

been noticing this for a while and now its really bugging me to the point where its not safe.

basically when I'm going over an expansion joint on the highway 55-75MPH the stability control kicks in, shimmy's the front wheels/kicks in the brakes the whole nine yards.

ive used my aev pro-call redone the tire size correctly underload, checked tire pressure, no dealer CEL codes to read. what can this be? the only thing ive noticed is the front sway bar bolts make slight contact with the spring tower ( I saw the rust where it happens to touch under compression)



any help would be fantastic!

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Old 12-01-2018, 04:38 PM   #2
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What size tires, how many miles on the ball joints and tie rods?

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Old 12-01-2018, 04:47 PM
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27k and ko2 315's it doesn't do it every time only once in a while im almost leaning towards a speed sensor?
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Old 12-01-2018, 08:03 PM   #4
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Mine just did this for the first time last weekend. No idea what caused it.
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Old 12-02-2018, 03:58 PM
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Mine just did this for the first time last weekend. No idea what caused it.
really? its pretty scary when your not expecting it.
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Old 12-02-2018, 04:19 PM   #6
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really? its pretty scary when your not expecting it.

After reading and thinking about it some more I think I know what caused mine. I was on my way home from a wheeling trip where I had crossed water deep enough to cover the hub. My guess is that some water/moisture reached one of the wheel speed sensors and that tripped the stability control light after hitting a stanchion on the highway. In my case, the stability control didn't actually engage and brake, I just had the light flash on my dash for 1 or 2 seconds. Weird.


Wish I could offer more to your situation. Is your steering wheel centered? Maybe one of your wheel speed sensors is going bad?
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Old 12-02-2018, 04:26 PM   #7
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Is your steering wheel centered?

That was my question as well. Mine is a little off but have had no problems yet...however I was warned if it gets too far off it can trigger stability control issues on the highway.


Ohhh....and I will sort mine out, just need one of the kids here long enough to fix it. I think it will be easier with a spotter.
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Old 12-03-2018, 10:07 AM   #8
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Old 12-08-2018, 06:25 PM
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yeah steering wheel is centered. I heard it can be confirmed with the Procal?

this issue doesn't happen every time I drive it. only special times. cant really narrow it down to say rainy days or not. it VERY sporadic
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Old 12-08-2018, 10:28 PM   #10
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Nothing is wrong with the Jeep most likely and probably everything to do with the driver. That is not to say you are a bad driver it just has to do with the dynamics of the Jeep steering system. Because our linkage is all ridged, feed back through the wheel is instantaneous and we tend to over correct when the wheel gets jerked. I first noticed this when my Jeep was stock, especially in a slight turn. I installed the Griffin Attenuator and that solved about 99.9% of the problem. It will still at times kick out of cruise control when hitting an expansion joint of have ABS kick in when hitting a poor piece of road way under braking but traction control almost never kicks in now.
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Old 01-03-2019, 05:32 PM
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im really leaning towards the shocks/springs of the mopar kit. its almost like too much body movement. its been doing it lately I know for sure that no tire is loosing traction.
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Old 01-03-2019, 08:59 PM   #12
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Did this start after lift install, or did it drive fine for a while?
4” of lift is a lot on a 2 door, and is going to need more attention than a stock DD, either way.
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Old 01-03-2019, 10:31 PM   #13
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I have been dealing with these issues for about 6 weeks now after the install of a new front axle (including new Mopar wheel speed sensors). You are going to need a scan tool that can also scan the ABS system.

First I had codes from the right front wheel sensor and replaced that and the problem went away. Then I had a grinding of the front left brakes during sharp turns, and eventually error codes. I replaced the front left wheel speed sensor and all worked fine for a few days. Then out in some mud in 4Hi and all hell broke loose. Engine power shut down and was hoping I wouldn't get stuck in the mud.

From what I understand these problems are hard to track down and can be any number of things. I have heard that this can occur when the front axle is not properly centered after suspension work. Could be the tone ring is damaged or has debris in it. Could be the unit bearing is going south. Start with the scan tool and see what codes are up. The wheel speed sensors can be purchase online for around $25. Check front axle centering.

I still don't have an answer to my problem and today contacted Dynatrac for suggestions on what to try next. After the mud incident I got concerned and today I did the DIY traction nanny kill switch:https://www.wranglerforum.com/f274/a...res-87119.html

I have driving a good portion of my life including off roading without all this traction control nonsense and if that's where I end up so be it. The only bummer is that with traction nanny completely killed I lose cruise control.

Good luck.
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Old 01-03-2019, 10:41 PM   #14
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That system was designed to function with a stock/factory set up, stock geometry, ie no lift. As we change/mod it becomes more sensitive. With a lift we are no longer in the zone so to speak. As we lift the geometry in relation to stock goes out the window. I’m lifted and my warning lights/sounds go off often.
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Old 01-04-2019, 03:44 PM   #15
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Quote:
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That system was designed to function with a stock/factory set up, stock geometry, ie no lift. As we change/mod it becomes more sensitive. With a lift we are no longer in the zone so to speak. As we lift the geometry in relation to stock goes out the window. I知 lifted and my warning lights/sounds go off often.
The only thing potentially impacted by a lift is the yaw sensor and only then if you have excess body roll, squat or dive. This does not take into account a poor install such as having wires that do no have enough play in them to allow for the addition height and suspension movement. Since installing my lift and my brake kit rarely will I get a light or even have cruise control kick off when hitting a bump. It is much better than stock ever was.
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Old 01-04-2019, 03:53 PM   #16
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Before I got into the complex things like sensors I would make sure that all the required bolts are tightened to the required torque. A loose track bar bolt or other loose bolts could create issues like this.
That said, the Mopar 4" lift does not exactly have a reputation as a great lift. And you certainly could have an issue with a bad shock. But start at the beginning, make sure things haven't gotten loose.

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