Hi @hawairishi see your truck is a 2004 SE, I also have a 2004 (LE trim though). I am battling the P1130 dtc code and the attendant symptom too; engine bucking at about 3k rpm. From visual inspection of my engine, i see the hoses associated with the swirl control mechanism are not in proper place. I'd appreciate a clear picture of a working system so i can reference same to fix mine. Could you please help with a clear picture of yours showing the paths of the hoses and their connection between the airbox, check switch, swirl control solenoid, vacuum box, etc. Thanks in advance.