Mustang5090

Hey guys 90 5.0 lx Weird issue im having, The car will run fine at wot but if im cruising in 4th or 5th its almost like im running out of gas, but if i floor it it clears out, I check my plugs they look fine, cap rotor and wire are all brand new, the car has been sitting in my tent for awhile so i thought maybe water got in the gas so i drained the tank and same issue, did a drivability test with the fuel pressure tester hooked up and fuel pressure is fine even when it starts running like crap, 02 sensors are also brand new, the car ran fine when i parked it and first time i drove it after awhile it started doing what i described, any input would be awesome and greatly appreciated,

amlmustang

Have you checked your coil?