Im fairly new to posting things on this site but this problem has me scratching my head and i would gratefully appreciate any replies. i had a part of my pcm harness burn on my header the piece that burnt is for the pass. side o2, some starter wires, crank pos., i dont know how long i road like that maybe 1 month the ses light stayed on until i changed the wires now the car stumbles at a low rpm, sometimes backfires, and i keep having oil on plug #8 the car is running rich and seems to clear up after 3k rpms and pulls strong. It also has a bad shake, miss at a low rpm in sixth until i get it to 2k4ish rpms
i have tr55 plugs, 30 lb inj., and the car is a 97 with an OBD1 comp. could this be bad plugs, wires, stuck inj., please help, anyone

 

Bump, my car does alot of the same...