This morning, when I was waiting for signal at a intersection, my Jeep was shaking, not
too crazy, but I can feel the strength.

After the signal turned green, I started driving and the shake went away and I can not
reproduce this problem again. I even tried to stay in idle state for 5 minutes and nothing
happens.

Do I need to worry about it. My JK is still under factory warranty. But if I can not reproduce
the problem, I guess the mechanics can not help me much on this issue.

 

This is super super common in JKs. I don't think there's much to worry about. I found in my case that putting shell fuel instead of no name brands did prevent my jeep from doing it, but that's just my personal experience. You can also try putting in some fuel injector cleaner.

 

Mine does it from time to time. No biggie.

 

Mine has done it about 3 or 4 times over 4 years. I just relate it to piss poor gas or higher ethanol content. When this happen's I usually drop in a can of seafoam into the tank to clean out the injectors & get on the skinny pedal more to blast out any build-up!

 

X2!! seafoam is amazing stuff! u can also run it right into the brake booster vaccum line to clean the intake, and the tops of the valves... and it makes quite a smoke show!

 

Shouldn't be a problem. Could have been a little moisture in the fuel. X2 on Shell. I try to stick with name brand fuel also. How much fuel was in the tank. I try not to go below 1/4.

 

haha...yes it can make a good smoke show!

 

Same here, I dont know what it is.....
But shell is always the cheapest in my area so im not complaining

 

Mine does it occasionally. Everyone else says dont worry about it too. I wouldnt worry to much. Might just be a small cam surge or something. No biggie