Metalcloak Thread
JK Junkie
Joined: Jun 2013
Posts: 3,697
Likes: 2
From: Grosse Pointe, MI
Earlier this year I installed the GC ABS 2.5" lift on my 2012 JKUR. This came with the 26" brake lines, which were installed. Since then the ABS kicks in a lot more often, even at times when it really shouldn't. For instance, the road pulling into my driveway has a lot of blacktop patching...it is a little bumpy...when I pull into my driveway doing about 5 mph...I hit the brakes and can feel the ABS kick in. Would the longer brake lines have that affect on the ABS?
1. There could be air in the abs unit. Not uncommon if too much brake fluid leaks during installation. A regular brake bleed won't work. You need to have the dealer bleed them using the star scan tool which cycles the abs to remove air. DO THIS LAST if nothing else works as it can cost $100+.
2. Check and clean your wheel speed sensors and tone rings. I have gotten mud in mine and it caused issues.
3. Use a Procal when getting the steering wheel re-centered. This is a very misunderstood topic. The Procal has a steering wheel centering function. Contrary to popular belief, it is not meant to tell you when it is centered. When the wheel is centered on an alignment rack, the Procal function is used to tell the computer that that point is the new point at which the wheel is centered. Not doing this can cause the calibration in the computer to be off and can cause random application of the ABS and traction control. I'd guess this is your issue as it is fairly common.
JK Newbie
Joined: Apr 2008
Posts: 76
Likes: 0
From: Frederick, MD
3. Use a Procal when getting the steering wheel re-centered. This is a very misunderstood topic. The Procal has a steering wheel centering function. Contrary to popular belief, it is not meant to tell you when it is centered. When the wheel is centered on an alignment rack, the Procal function is used to tell the computer that that point is the new point at which the wheel is centered. Not doing this can cause the calibration in the computer to be off and can cause random application of the ABS and traction control. I'd guess this is your issue as it is fairly common.
JK Junkie
Joined: Nov 2013
Posts: 3,703
Likes: 8
From: The Dirty South
Odd because I have the same lift but actually netted 3.5" from the 2.5" kit and just recentered my steering wheel with the drag link and don't have the same problem. Does it just happen randomly to some people?
JK Junkie
Joined: Jun 2013
Posts: 3,697
Likes: 2
From: Grosse Pointe, MI
The abs is connected to the speed sensors. So, either there is an issue with that or the relationship between the sensors and the steering wheel.
Is it definitely the abs going off or the traction control? Guess I should have asked that before. I assumed the it was the traction control.
JK Freak
Joined: Oct 2012
Posts: 832
Likes: 1
From: Sabina, OH
As mentioned, I would try to bleed the brakes again.
When I installed our lift I left the lines sit open too long and it was a PITA to get the system properly bled again. I went through two large jugs of fluid and was still getting some very small bubbles. Then, I drove it for two days and did it again.... until finally, the fluid ran clear.
In these two days I did have the ABS kick in once...
When I installed our lift I left the lines sit open too long and it was a PITA to get the system properly bled again. I went through two large jugs of fluid and was still getting some very small bubbles. Then, I drove it for two days and did it again.... until finally, the fluid ran clear.
In these two days I did have the ABS kick in once...
JK Junkie
Joined: Nov 2013
Posts: 3,703
Likes: 8
From: The Dirty South
I have an Interceptor gauge which communicates with the computer through the OBD2 port. It can read steering wheel center. I'm not positive but I believe I checked the reading after I adjusted the drag link and it was right on. I can check tonight if need be. But if that is the case then it suggests a relation between the steering wheel and the clock spring. Once the steering wheel was recentered, it was reading zero. No computer reset required.
However, there's more than one way to skin a cat.
However, there's more than one way to skin a cat.
Last edited by 14Sport; Sep 22, 2014 at 08:30 AM.
JK Enthusiast
Joined: Feb 2014
Posts: 121
Likes: 0
From: Sicily, IT
Earlier this year I installed the GC ABS 2.5" lift on my 2012 JKUR. This came with the 26" brake lines, which were installed. Since then the ABS kicks in a lot more often, even at times when it really shouldn't. For instance, the road pulling into my driveway has a lot of blacktop patching...it is a little bumpy...when I pull into my driveway doing about 5 mph...I hit the brakes and can feel the ABS kick in. Would the longer brake lines have that affect on the ABS?