It didnt solve the problem, because the noxem O2 probe fails because of water that destroye the O2 sensor only one year after purchase. After infound the reason, that the origine noxem has two build in Sensors wirch is the second O2 sensor i bought an cheap chinese O2 wiseband sensor. Its lasts one two or three thoussend kilometeres.
Then i modified the sensor mount and bought a origine Bosch LSU 4.9 O2 Sensor that made for a dacia (cheapest variante with connector). Now it lasts around 4tkm and the engine still runs smooth and with low fuel/100km.