Thread: Plz Help! Bucking at partial throttle!

Hey i have a JDM RR swapped 96 200sx se. When under partial throttle, ie leaving stoplights or pulling out of drive way, sometimes the car will bog and missfire the start bucking until i hit the clutch. Also on startup sometimes it will immediately bog down to 500 or so RPM and sputter until it tap the gas then it idles. I also smell raw fuel from when either one of these problems occur which leads me to believe im running rich. my question is why? I would like to think i have a bad tps, O2 sensor, or maybe even maf? what do you guys think? Thanks!

anybody have any input on my issues?!?!

Unplug the front O2 sensor and see how it runs.

Unplugged it and it ran the same, no noticable difference at all! im sure something is supposed to happed!