esp acting up after ome hd instal - JeepForum.com
 
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post #1 of 10 Old 03-05-2014, 09:05 PM Thread Starter
ChrisMartin921
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esp acting up after ome hd install

I installed the ome hd lift on my 06 grand Cherokee and had it aligned after the install. I also put 17x8 xd series wheels with 35 offset and 265-70-17 terra grapplers. I was getting on the highway and was going about 30mph on the on ramp and the traction control came on and the ESP grabbed the front brake but I wasnt sliding. Any way the esp can be reworked to not be so sensitive?


Last edited by ChrisMartin921; 03-05-2014 at 09:24 PM.
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post #2 of 10 Old 03-05-2014, 09:45 PM
fafafofi
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Read the "JK rubi take offs" thread. A few of is talking about that there. My guess is need for lift specific UCAs to help with alignment but I'm no expert. Let me know if you start getting a squeak from the ball joints. I have a theory it happens at full lift before the need for a super lift
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post #3 of 10 Old 03-06-2014, 05:53 AM
JeepN4KC
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This is a common issue. IMO more common in the 4.7s as the QTII system also uses the btc to limit wheel slip (this on top of esp). Could be wrong........

Several have suggested disabling the esp. Personally I'd just keep a close eye on specifically when the rig does this and note your turn radius and speed - then adjust driving style accordingly.

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post #4 of 10 Old 03-06-2014, 08:24 AM
skibum555
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Quote:
Originally Posted by JeepN4KC View Post
This is a common issue. IMO more common in the 4.7s as the QTII system also uses the btc to limit wheel slip (this on top of esp). Could be wrong........

Several have suggested disabling the esp. Personally I'd just keep a close eye on specifically when the rig does this and note your turn radius and speed - then adjust driving style accordingly.

Yep, I started the Rubi Take off thread and since I started taking it a little easier I haven't had any issues with it. My 05 QDII only freaks out if I take a slight curve at speed. I have just toned down my aggressive entry into corners and no ESP!!! another option would be to drive around with my ESP off...but I never remember to push the darn button.

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post #5 of 10 Old 03-06-2014, 10:38 AM
sk1er18
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Did you reprogram the tire size? And if you did, did you measure the effective radius of the tire to determine the "actual" size that the computer should be programmed to?

-Matt
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post #6 of 10 Old 03-06-2014, 11:12 AM
BAH101
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I have the same size tires, (different type though) with OME lift and never had an issue with traction control. I wonder if you have a bad sensor, or a partially disconnected sensor plug from installation. Might be a good place to start.

2008 CRD QDII, OME HD, Pintlers wheels with 265/70/17 Goodyear Silent Armour's, Jeepinbyal UCA's. 4XGuard Front guard, Side Guard, belly guard, Matrix HC. GDE ECO Tune w/ delete.
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post #7 of 10 Old 03-06-2014, 01:11 PM
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The issue is tire size. The computer needs to be told your actual tire size, so that it knows your actual speed. The problem is that with larger tires, you going faster than the computer knows. So when you take a turn, the gyroscope measures a certain amount of yaw, and because the computer thinks your going slower, that's too much yaw for the speed and thinks your about to roll over. Telling it you have larger tires, it knows your actually going faster, and that amount of yaw is normal for that speed
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post #8 of 10 Old 03-06-2014, 02:04 PM
skibum555
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Quote:
Originally Posted by trax95008 View Post
The issue is tire size. The computer needs to be told your actual tire size, so that it knows your actual speed. The problem is that with larger tires, you going faster than the computer knows. So when you take a turn, the gyroscope measures a certain amount of yaw, and because the computer thinks your going slower, that's too much yaw for the speed and thinks your about to roll over. Telling it you have larger tires, it knows your actually going faster, and that amount of yaw is normal for that speed
For the win!! I was second guessing myself about where the confusion was occurring as far as the stability system... it's that damn YAW.... lol thanks man. This will put my worries to rest. Now to find find a used superchip or other tuner.

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post #9 of 10 Old 03-06-2014, 03:13 PM Thread Starter
ChrisMartin921
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I used the flashpaq 3872 to calibrate the speedo. And yes I measured the tires to find correct size

06 grand Cherokee 4.7L. OME HD lift, XD series heist 17x8 35offset wheels, 265-70-17 terra grapplers, Superchips 3872 with trans tune. K&N filter, interior l.e.d.'s, custom l.e.d. lighting in headliner.
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post #10 of 10 Old 03-07-2014, 10:25 AM
audiophonicz
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Quote:
Originally Posted by skibum555 View Post
Yep, I started the Rubi Take off thread and since I started taking it a little easier I haven't had any issues with it. My 05 QDII only freaks out if I take a slight curve at speed. I have just toned down my aggressive entry into corners and no ESP!!! another option would be to drive around with my ESP off...but I never remember to push the darn button.

Its inherant to our Jeeps. I have the exact same thing above with twice the lift + the EGR module. Just gotta take them ramps slow.

Its also fun when you hit 50 way out of alignment with your steering wheel at 2o'clock going dead straight. ESP freaks out and disables itself.
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