Woah!!!

[jeep350]

ok i have just put my 3.8 back in my 96 firebird. its ran fine long enough to go through inspection in witch it failed emissions. witch was anticipated. on my way home from DMV my SES light came on and car started jerking and snatching. before all of this i noticed it was dead after 2000 rpm. when i finally made it home i checked the codes one saying MAF or VAF low voltage i replaced the MAF code has no longer come up. and cyln 6 missfire i replaced coil pack that come went away. i drove less then 1/4 of a mile SES light comes back on come home check codes again one code says something bout CPS out of range i will have excact code tomorrow and other is o2 sensor bank 1 sensor 3 no response witch o2 sensor is that and any other info on these problem would be helpful


thanks
levi