Ok....update....last week out of the blue the Jeep started starting real hard. Then my brother put in the new fuel pressure regulator. He went and got a FP gauge and tested 14lbs while running. Then he tried to test the pressure when you first turn the key and hear the fuel pump cycle...he got nothing. He double checked that it was cycling on, again, but no FP read immediately after it cycled (this is all before turning the key all the way to start). He pulled the filter just to check it was not plugged (only an hour of run time on it since new). He said he was going to get underneath it and check electric connectors tomorrow. He said he has run into a similar issue on Ford rangers and it was always a Fuel Pump relay, and some times a bad\dirty\corroded connection, but YJs don't have a fuel pump relay corr? He was also going to check voltage at the pump.