Hi everyone I recently changed the motor in my 2002 nissan altima 3.5. It fired up just fine and ran great for about 20 minutes while we filled up the remaining fluids. When I got in the car to press the gas it sounded like it was bogging out. It would not go past 2500rpm just make bogging sounds and eventually stalled. From there on every time I started it it got harder to start. So frustrated I left it for the night and when I came out in the morning I attempted to start it again and it won't go at all unless I floor the gas and even then it only starts up for about 1 second and stalls. Any ideas would be greatly appreciated! P.s. I did have some codes regarding the throttle control so I changed the throttle body and drive by wire gas pedal.