Ive been getting the P0101 code real speraticly for the past year. It would come on mybe once a week. As for the performance of the car it ran great. Then about 7 months ago when ever I would start the car and drive it, it would miss a little and sorta buck like a horse, but after about 2 min it would clear up pand run great for the rest of that drive cycle. This all started getting worse over the past two meeks. Now the car seems to buck pretty much as long as I drive it. If I floor it, it would be fine run great, but letting off and driving normal it starts bucking and now I'm getting the P1133 code pretty frequantly... PLEASE HELP.....

 

Hi-without knowing more about your mods or what you've done to the car lately all I can do is guess--A brief history of mods and recent maintenance would help to narrow the problem--
P0101 is "MAF sensor performance" The bucking you're feeling is caused by the MAF-especially on an automatic it is more noticable--Can you check the LTFT's somehow ?? Also--have you recently cleaned or re-oiled the air filter ? Over oiling will cause poor MAF performance--Clean the MAF interal wires with some TB cleaner or Brake clean--Did you remove the screen ? a NO NO---You may have a vacuum leak causing unmetered airflow --or it may be a Plugged PCV system
P1133 is "insufficient switching of the FRONT /DRIVER'S side 02 sensor"--generally caused by the 02 not heating up --Do you have headers or recently made an exhaust change ?? It usually is an exhaust leak-- or can be a bad sensor--
The 2 codes CAN be related--but not neccesarily--the 02 sensor may be sending false data back to the computer because of an exhaust leak-If the error is over 25% then the computer will NOT be able to compensate enough to achieve the 14.68 AFR in closed loop--throwing the MAF code--
The fact that it runs fine at WOT shows that the problem concerns closed loop operation and at WOT it is in Open Loop/PE and the 02's aren't being used--