I was leaveing for work went to start my Jeep and it acted like the battery or starter was going out. (tried to turn over for a second then nothing) did this a couple of times then it started right up. All electrical ran fine. I went to work turned of the Jeep turned it on and it started right up. I let it sit for a couple hours went back out and started it. it started right up.
My question is... Do I need to be worried or was it just a fluke? Please feel free to PM me if you have any ideas or if you think this could be something serious.

 

Get your battery tested. Mine would just go click with nothing else, figured starter. Turns out I had a dead cell in my battery! ALWAYS start with battery first.

 

Remove clean and re-tighten your battery connections.

 

And the starter connections as well and the main ground cable from the engine to the frame, a good ground on the starter is just as important as pos connection , even removing starter bolts and cleaning them if there corroded can solve allot of problems

 

Do you have an auto?

I have this issue from time to time. Once every 3-4 months, then it will happen like 3 days in a row.
I have an auto, and I have to move the shifter out of park, then back in.
Which leads me to believe it’s the neutral safety switch/ transmission range sensor.
It happen so infrequently it's hard to diagnose.
Next time it happens try to start it in neutral instead, or just push your shifter up a little.

I have advance auto test my entire electrial system, and everything checked out.

 

Better not be the shift I just had to have it replaced this spring! I couldnt get it to go in to drive from park, bad cylinoid, $300 dollars later I got it replaced shifter cylinoid and all