Bad history with this PT/Need assistance please/No longer Fan

Stuck with a lemon.....I have a 2005 4cy. standard within the 1st 4 months of having it new...
1)16 year old rear ended me sitting at a light, 2nd wreck of the day for him, same cop, no insurance
2)Newly divorced could not afford deductible.(driveable)
3)8 months..jerking, stalling, cutting out. Got code camshaft sensor.  Replaced, happened with 30minutes, autozone bad sensor, replaced again...still didn't work.Took it to the dealership,replaced a third time.  1/2 mile down the road same....oh, also airbag light off/ on the whole time. Dealership kept for over 2 weeks, new computer system, new wiring harness, and a new seatbelt retractor passenger side for airbag.  Had the car 24 hours and the same, even the airbag.  they kept car 3 days said it was the sensor.  Fastforward,8 months, now my car goes into safe mode; thinking it's transmission, they run a computer check and immediately they could tell it had a new computer. Did not see anything wrong with transmission, reset..6 months go by no problem now it happens once every 3 weeks, pull over, reset with ignition.  I have had many to look at it with no resolution.  I had no engine codes. yet..  Oh, yea..my airbag light is on/off again.  Today pulling off it goes into safe mode and I get a code of P0068 which I think it's the MAP sensor. The last service said he thought it was the computer.  I will not own another, even if it was given to me.  Any help would be greatly appreciated. My income is very limited