I went through and fine tuned my suspension. When I first put the lift no I got a lot of ESP firing. Now that I have it all dialed it it's as good as stock (i.e. never fires under normal driving).

I learned a couple things that I thought I would share.

It seems like there only needs to be a few degrees of difference between the steering angle and the vehicle direction to cause ESP to fire. My guess is between 5 and 10 degrees. ESP is MUCH more likely to fire when it senses oversteer as opposed to understeer. This is actually helpful for figuring out if your steering is slightly off, which way it's off.

If your ESP only fires in right handers you steering wheel is probably slightly to far to the left. If your ESP only fires in left handers your steering wheel is probably slightly too far to the right.

Getting the caster right made a big difference. I had very little caster originally. Even though my steering wheel was completely centered I was still getting ESP firing. I believe this is because there is some inherrent slop in the steering. When there isn't enough caster to always want to return the steering to center the wheels and steering wheel flop around in that slop. That can cause the 5 - 10 degrees in difference between the steering angle and vehicle path causing the ESP to fire.

I dialed 6 degrees of caster into my driver's side and 7 degrees into the passenger side. Now the ESP never fires and the jeep drives REALLY nicely. I might still try to add 1/16" of toe-in (for a total of 1/8") just for giggles.

 

i just used the aev to center mine and i have had zero problems with it.

 

my ESP seems tempermental... i can make the same turn 10 times in a row.... the 11th it goes off.

my steering is pretty well dialed in, the wheel stays nice and centered. maybe i need to get my caster angles back in line? or an adjustable trackbar?

 

There's a thread floatin around here on the procedure to permanently disable ESP. It's also in your owner's manual.

 

there have been a few times this past winter, not that we had that much snow, that i was real glad that the ESP kicked in. made a huge difference. saved my ass too!

 

Check your caster. You just need a cheap angle finder (I think I paid $3.99 for mine at harbor freight). Get under the jeep and measure the angle of the ground right under the knuckle. Then put the angle finder on the bottom of the knuckle (there is a flat section on the bottom). Add or subtract the angle of the ground (depending which way it angles) from the angle you read off your knuckle and that is your caster angle.

4 - 5 degrees is what a stock wrangler has. Mine ended up with about 1 degree after my lift before I adjusted the lwoers. I experienmented with several different amounts and am really happy with 6 degrees driver 7 degrees passenger.

You'll obviously need adjustable lowers to be able to adjust it.

 

I agree 100%! On my stock rubicon ESP was great. It never fired when I didn't want it to, and it saved my butt in a couple of ice situations. So I'm really glad I have it working correclty on my lifted rig.

 

i know my caster is out. i just dont have the coin right now to get those adj lowers (see my previous rants about my exwife and all my money!) i didnt think it would effect my ESP.

 

I actually like mine, too, but I was just lettin yall know. You can turn it off.

 

I didn't think it would affect ESP either. It took me a while to work through why it has an effect. It definately affects ESP though. Again there will always be a few degrees of slop in your steering. When you have proper caster and are turning right for example the caster forces the wheels to push back to the left against the steering basically taking up the slop.

When you have very little caster and turn the wheels to the right the wheels aren't generating an opposing force. So the wheels (and the steering wheel) are free to move around within the several degrees of steering slop. This can generate enough of a diffference between the vehicle path and the steering angle to cause the ESP to fire.