I have been dealing with a No Start Condition for the past 8 months. I've been lurking on this forum since the beginning trying the solutions that others have posted. For that, I would like to say "THANK YOU!!". You all post excellent advice and give great detail for guys like me that have never worked on vehicles before. Unfortunately, none of the solutions have worked for me. Like I said, I have pretty much zero experience working on cars, but thanks to this site I have learned a lot.
So, I have the condition where the Jeep won't start after I have been running errands at various times during the day. It always starts fine first thing in the morning. It originally started doing this in November, but now that I am in the wonderfully hot temps of an Arizona summer (110+ degrees daily) it has gotten worse. It happens every single day. And yes, it is my daily driver. I have an automatic 2010 Jeep Wrangler Unlimited Sport 4WD and just hit 75,000 miles. When it doesn't start all gauges work including the air conditioning, radio, etc. So the battery is fine. Although I did have it replaced in early December (and just had it checked this weekend). I've tried jiggling the shifter, but that has never worked. Neither has starting it in Neutral.
Here is a list of what I have done (thanks to the advice of you all!):
Starter (3 times) Also just had it checked this weekend and all is good.
Throttle Position Sensor (dealer replaced this "this fixes 99.9% of these issues" NOPE!)
Starter Relays in the fuse box
Added Poison Spyder Hood Louvres to relieve some of the heat trapped in the engine compartment (not overheating, just my thought that it always happens when the engine gets hot from driving around)
Clean all battery connections
Clean ground connections
Add 4 gauge ground from negative battery terminal to alternator
Add 4 gauge ground from negative battery terminal to starter
Crankshaft Position Sensor
Ignition Switch (actuator was not broken, so I didn't replace it)
Any help would be greatly appreciated. Again, thank you for all of your prior help in other threads. Mine just seems like it doesn't want to respond to any of the above.