02 Sensor on AE86?

[Xyrath 86]

Hey
Does anyone know where the 02 sensor on an AE86 goes to? Mine is just hanging down and I think its making my car run lean? and heater not work?

[1eyed]

Hey
Does anyone know where the 02 sensor on an AE86 goes to? Mine is just hanging down and I think its making my car run lean? and heater not work?

Unless there is something else wrong, disconnecting the O2 sensor will make most cars run rich (open loop on ECUs is generally conservative, slightly rich to protect the engine from burnt valves, detonation etc etc).

Look for an unplugged connector somewhere nearby.

Your heater is unrelated.