05 JEEP TECH QUESTION

Just spray an alternative fuel source in the throttle body when it won't start and see if it will start off of that albeit it won't run long off that and at least then you will have determined that it is a lack of fuel and not lack of spark or communication issue or etc. You need to narrow it down somewhat and that is an easy way to cut part of the possibilities out of the picture. If it starts as someone sprays propane preferably, but probably not accessible to you, so maybe carb cleaner or starting fluid in throttle body and it starts and stays running as long as they continue to spray then check for power and ground back at the fuel pump connector with a Power Probe ideally and if you have both of those then put a new/better pump in it........it's pretty simple if you stick to the basics and not listen to every Tom, Dick and Harry that thinks they know what they are talking about.