ha..... i just started it and it seems fine aside from the faint smell of plastic somewhere. back to the code 34 again. when i tested the o2 sensors the check engine light wasnt blinking correctly so i thought the o2 sensor may b the cause of the knock sensor code. it was sluggish at low rpms. seems to b a little better. its a na 2+2 1991......blood sweat and tears with this car:) thanks