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1 Second Engine Shut down

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Old May 18, 2021 | 01:49 PM
  #1  
KamosesKong's Avatar
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JK Newbie
 
Joined: May 2021
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From: Tolono
Default 1 Second Engine Shut down

I've looked around and haven't been able to find anything on this issue, so forgive me if this has been readily resolved.

I've got a 2015 JK 2-dr Sport with 90k miles (bought it at about 35k). Something that has been happening slightly more periodically is the engine will shut off (RPM drops to 0) for about one second, then it pops back to life. Usually happens when I am on the interstate, but sometimes as slow as when I am starting from a stop sign. (It's the time's that I am pulling across traffic that really poses a problem). Often it will happen 2-4 times in succession at 5-10 second intervals, and then run fine for the rest of the trip. It happens both when using the gas pedal, or when using cruise control (effectively cancels the cruise speed).

No other electric shuts off. Simply RPM to 0 for a second, then back up as if nothing had happened. Has anyone else experienced this or have any idea what this might be?
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Old May 18, 2021 | 02:16 PM
  #2  
rob_engineer's Avatar
JK Junkie
 
Joined: Feb 2012
Posts: 3,499
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From: brick, nj
Default

Something somewhat similar happened to me and at least one other person on here. Like a momentary studder. The other member replaced his crank position sensor and it fixed his. I then took his advice and it worked for mine also. It only takes a few minutes to replace and is not expensive so it is certainly worth a try. The crank sensor, not the cam sensor. It is underneath, in the area behind the right front wheel.
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Old May 19, 2021 | 07:32 PM
  #3  
KamosesKong's Avatar
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From: Tolono
Default

Thanks for the advice, I will certainly give that a try!
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Old May 25, 2021 | 07:58 AM
  #4  
Niteshooter's Avatar
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Joined: May 2019
Posts: 194
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From: Toronto, Ontario
Default

Had this happen on my 13 JKU, replaced the crank as well as the cam position sensors. Not that difficult a job you can do yourself.
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