probe keeps chugging...

My 95 probe (4 cyl.) keeps chugging. its like its bucking... when i accelerate. like its not getting enough fuel, then it gets shot in all at once making the car jerk. not all the time tho. it started doing it while i was on my way home from a little road trip a couple a weeks ago. i've had my fuel injectors replaced, throttle body cleaned, and fuel pressure regulator replaced within in the last week (to stop the engine from dying when i was at a stop light or right after i put it in park). it didnt chug at all in between when i got home from the trip and actually took it into the shop. and it didnt do it when i left the house right after the regulator was replaced, but on my trip home, it started again.
what could this be?

urgh... now the 'O/D off' light flashing when its doing this... HELP PLEASE!!

My 95 probe (4 cyl.) keeps chugging. its like its bucking... when i accelerate. like its not getting enough fuel, then it gets shot in all at once making the car jerk. not all the time tho. it started doing it while i was on my way home from a little road trip a couple a weeks ago. i've had my fuel injectors replaced, throttle body cleaned, and fuel pressure regulator replaced within in the last week (to stop the engine from dying when i was at a stop light or right after i put it in park). it didnt chug at all in between when i got home from the trip and actually took it into the shop. and it didnt do it when i left the house right after the regulator was replaced, but on my trip home, it started again.
what could this be?

urgh... now the 'O/D off' light flashing when its doing this... HELP PLEASE!!

I am having the same problem, Do you have it resolved yet?

I havent taken it to a mechanic yet, so I dont REALLY know wutz wrong with it. I asked a guy who's in automotive school, just because we randomly started talking about cars, and he said it might just be a bad overdrive sensor. It doesnt happen all the time so I dont know how much I should worry about it, nor do I have the money to worry about it right now.
For my own peace of mind, Ive taken to restarting the car and giving it some gas for 5-10 second intervals until it stops. I dont know if this helps, or if it stops on its own, but its gets me where i'm going.

check your timing, your timing prob all messed. Its usuALLY that when it seem to drive fine but when u put it down it fight for something, its probably your timing belt. cost around 200-300$

How do i check the timing? Is there something I would notice or should i just take it to a mechanic? I am FAR from being mechanically savvy...