92 Buick Regal GS
185k
for the last 3 weeks my buick has been intermittently running poorly. during acceleration it would hesitate and act like it was misfiring, however this was only on occasion most of the time it was fine. well friday night i was driving it and it stalled out at about 55mph. after about 4x trying to get it started it finnally went but now it was having serious acceleration problems, idling very badly, and stalling out when coming to a stop or if i pressed the accelerator down too much. i made it to my friends house and after letting it sit for a few hours i could not get it started. next day i tried again and after about 15 minutes it started and kept running, i was able to drive it to my parents house 15 miles away where i could have my dad look at it. we noticed one of the ignition coils was sparking so i replaced it. however still same problems. not able to get it started, when it does start it will idle very rough, and have lots of problems with accelerating. so today i decided to changed the spark plugs because they havent been changed for 75k miles. got all of the spark plugs changed. after 3 attempts the car kept running and i was able to drive it around the block without it stalling, but under acceleration if i tried to push it down more it would act like the car was going to die.
any ideas?
from searching the web i found that it could be a dirty throttle body, misaligned TPS, or possibly a bad crankshaft position sensor or possibly a number of other things
what do you guys think?