Fiat Punto Lambda Sensor?

[andyrobus_42]

If i drive my Fiat Punto 1242cc Mk1 with its Lambda sensor disconnected from the cable will it do any harm? - the engine idles perfectly when it disconnected and lumpy idling when it is connected.

I don't fancy changing the sensor at the moment I will get around to it later but if I leave it disconnected for the time being will it cause any harm or use any more fuel etc...?

 

[Jason C]

The labda sensor is fitted to the exhaust of the car to monitor the O2 level in the exhaust gasses. The signal from the sensor controls via the engine management system the fuel ratio to the engine.
With the wire removed there is the potential to damage the cat converter and also the car will defiantly fail its next mot.
Ja.