96 XJ Hesitation when hot & cant rev

SOLVED. Fuel Pump and pressure regulator were the culprits. Fuel pump would start to loose pressure after the vehicle was running for 30-45 minutes. 96 was the odd year that you can't find the complete fuel pump assembly for so I purchased the pump itself that used the stock connector. I cha get the small rubber line that goes in-between the pump and pump assembly along with the regulator and so far so good. It was easily missed as when the vehicle was missing and the fuel pressure gage was on, it still showed 51 psi. I only noticed it once I was trying to rev it up that the pressure would dip down to the 20's. All in, its a $890.00 jeep with the $500 purchase price included.

Good job.

Thank you for posting the solution and details about when the pressure dropped.