Loss of power in 4WD High

Danarch

Danarch

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Orangevale, CA
Have a 2015, JKURHR, 6 Speed, 24,000 miles, all stock. I’ve noticed when we go off road at times in 4H it seems the Jeep losses power. Press on gas and very limited response or sometimes just stalls. Runs fine in 4L, no problem at all, actually does fantastic. I could go all day long in 4L. No CEL or anything and runs great at all other times. It has been at higher elevations, above 6,500 and seems to occur more when on an incline. Not sure if it would happen at lower elevations since all my four wheeling so far is in the Sierra's. I know I had similar issues with my 87YJ, but it had a carburetor, and didn‘t the issue would occur with fuel injection systems as much. Just wondering if anyone else has a similar issue.
 
Check the insulation under the hood to insure it is not loose and falling down to cover the air filter intake. Maybe try shutting off the stability control
 
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Thanks, hadn’t really thought of either of those. The insulation didn’t think about since the rest of the time it doesn’t seem to be an issue. Do people just cut out a rectangle to match the size of the intake? Curious what would turning off the stability control do? It could make sense as it turned of automatically in 4L and the situation doesn’t happen.
 
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Idk about the newer ones but on the older 3.8 jk you have to hold the traction control button several seconds to get it fully off. If you just hit it and you get to spinning it will still cut your fuel is just slightly less invasive. VERY invasive in snow. I had it cut on and stop me once up a step snow covered grade that I would have easily made it up had the traction control not intervened. If any tire slips or is in the air the jeep will apply brakes and cut fuel unless disabled. Even if you hold it to the floor
 
Thank you, just checked the owners manual. It is similar in function. Looks like it has to be depressed for 5 seconds. I certainly give it a try next time, which may be Saturday.
 
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There is a wire under the console that controls all the stabilizing functions. If I were using my jeep to it's full potential I would think this mod would be number one on the list.
Cut the wire and insert a switch like this

There are quite a few videos on how this is done.

Don
 
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xackley said:
There is a wire under the console that controls all the stabilizing functions. If I were using my jeep to it's full potential I would think this mod would be number one on the list.
Cut the wire and insert a switch like this

There are quite a few videos on how this is done.

Don
Click to expand...


This is the reason i'm not fixing my speed sensor, no ABS or ESP. just like the way I grew up driving.
 
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xackley said:
There is a wire under the console that controls all the stabilizing functions. If I were using my jeep to it's full potential I would think this mod would be number one on the list.
Cut the wire and insert a switch like this

There are quite a few videos on how this is done.

Don
Click to expand...
Thanks, I’ve seen some of them just wasn’t sure if I wanted to try It. I think Chris even has one one in the “How To” section of the forum. At least now I know the issue may be related to the ESC. I guess I am still not sure why that would cause the loss of power but seems to be an viable reason.
 
BLACKJKU said:
This is the reason i'm not fixing my speed sensor, no ABS or ESP. just like the way I grew up driving.
Click to expand...
It didn't just give up for nostalgia though. About half the time the wheel bearing is getting bad letting the reluctor get too far from the sensor. Another decent percent of the time the u joint causes it on these wranglers (or any other live axle front end) Id fix the problem and then disable the system if i didn't like it. It could very well be a buildup of metal dust on the sensor, a cut wire, a bad sensor etc etc. Ive seen them all. In that case no big deal. But i would be sure

I drive a 66, and a 79 about half the time I'm driving. Most of the other half is in a mach one with everything disabled. I would still at least figure out what was causing the system to be inactive.
 
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