ok when the car cranks it has a really weird idle, that dosnt go away. the ECU is a PR4 OBD0 the motor is a B18B LS motor, there is also a plug under the intake manifold unpluged its like above and to the left of the oil pressure sending unit. the actual plug is burnt up so i couldnt plug it back in. im going to get a new plug for it tonight and see what it does.

the idle isnt like a cold start idle where it just jumps for 700-1200 rpms, it is more of a low rpm, but isnt acting like it is wanting to die. anyone got any ideas?