Jeep just shuts down while driving

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harrisonm

harrisonm

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My daughter has a 2015 Jeep Sahara with the V6 engine. She loves her Jeep. Unfortunately, over the last four or five weeks. It has just shut down on her about five times. She’s driving down the road and all of a sudden it’ll just shut off like she turned off the key. She’ll pull over to the side of the road, turn off the key, put it in park and it will start right back up. I’m going to have her bring it to Topeka so I can take it to my favorite Jeep dealership and have them look at it. My fear is that with no check engine light and no codes, they will likely just say we don’t know what it is. It almost has to be electric. I had something similar to this happen to me on a Jeep grand Cherokee many years ago. I put in a new battery because the battery was about six years old, and it never happened again. That could have just been a That could have just been a coincidence. Any ideas?
 
harrisonm said:
My daughter has a 2015 Jeep Sahara with the V6 engine. She loves her Jeep. Unfortunately, over the last four or five weeks. It has just shut down on her about five times. She’s driving down the road and all of a sudden it’ll just shut off like she turned off the key. She’ll pull over to the side of the road, turn off the key, put it in park and it will start right back up. I’m going to have her bring it to Topeka so I can take it to my favorite Jeep dealership and have them look at it. My fear is that with no check engine light and no codes, they will likely just say we don’t know what it is. It almost has to be electric. I had something similar to this happen to me on a Jeep grand Cherokee many years ago. I put in a new battery because the battery was about six years old, and it never happened again. That could have just been a That could have just been a coincidence. Any ideas?
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A good tech with the right scanner should find the problem even if it not throwing a code..
 
A similar thing was happening in my 2004 jeep grand cherokee. I would be driving on the freeway and it would just shut off for about 2-3 seconds then fire up again. Or I would be at a red light and it would just shut off and if I turned the key it fired back up no problem with no check engine light. I scanned it anyway and I got a code for the crank position sensor. Swapped that out and haven't had an issue since
 
It might be a tough one to troubleshoot without a logger if no codes are thrown. You might as well change out the CPS if you have to guess as it’s cheap. I would also be looking at the fuel pump relay as a possible cause. I think there was a recall on my ‘11 Grand Cherokee 3.6 for that. The next check would be under hood grounds.
 
My '05 Ram was doing the same a while back. Code for crank position and cam position came up.
Bought both Napa parts. Only needed the CP sensor as it turned out.
A PITA to get the old CP sensor out due to years of rust build up. A lot of scraping and PB blaster finally worked it loose and eventually removed without breaking it off.
So far so good with the Napa part.
 
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