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Limp mode on a manual

20573 Views 60 Replies 11 Participants Last post by  WillysGal
I was driving on an easy trail earlier today, but hit a bump or rut with some force. The jeep made a jeep, the ESC Malfunction and MIL Lights illuminated, and limp mode was enabled, or what I believe to be limp mode: power drops off in all gears at 3k.

I am going to the dealer tomorrow; just happened to have an appointment.

Any thoughts on what is going on.

My limited searching resulted in auto transmission limps.

I doubt there is any causal relationship, but:

1) Earlier today I pulled out a stuck F150. Low 1st easy pull, no jerking or other "violence."

2) Saturday I got stuck in sand down to the frame, and needed to be pulled out with a winch.
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I was driving on an easy trail earlier today, but hit a bump or rut with some force. The jeep made a jeep, the ESC Malfunction and MIL Lights illuminated, and limp mode was enabled, or what I believe to be limp mode: power drops off in all gears at 3k.

I am going to the dealer tomorrow; just happened to have an appointment.

Any thoughts on what is going on.

My limited searching resulted in auto transmission limps.

I doubt there is any causal relationship, but:

1) Earlier today I pulled out a stuck F150. Low 1st easy pull, no jerking or other "violence."

2) Saturday I got stuck in sand down to the frame, and needed to be pulled out with a winch.

Closest I've had to that is just the ESC light coming on. I had forgotten to turn off traction control (I always do that when off road) that one time. A little while after I turned it off and continued the trail our group was on, the ESC light went away after I assume the Jeep decided things were ok now. It had never done that before or since so I assume I just freaked out the traction control system and it decided to throw a fit for a while. I didn't have the MIL come on though so that's weird. Interested as well to know what the problem is in the end.
So, the jeep is scheduled to go back to the dealer early next week, and I have been driving it normally, on the assumption that I won't have any problems as long as I stay on paved roads.

My assumption was disproved earlier today. The MIL and ESC lamps illuminated on a smooth, paved road. First time this has happened on a paved road.

Also interestingly, the incident was preceded by a momentary drop of driving speed RPM's (~3k) to idle. The RPM drop was very short. RPM's went back to driving speed, and then the error lamps illuminated.

So, I wonder now if the problem is deteriorating (which may be easier to diagnose). Although, now it may be hazardous to drive casually.

Key dance did not display any codes.
I don't remember who it was......maybe "uphillbill" or similar username.......a couple years ago was having some really strange electrical issues that turned out after multiple dealer visits to be something grounding out I think between the transmission and the body. Maybe you've got something similar.....i.e. something randomly grounding out and causing issues?
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