I had open loop LPG system in my car, and I decided to add lambda sensor and fit LPG LCS (LPG lambda control system). I also fitted small LED voltmeter to monitor air/fuel ratio. It worked OK, going from rich to lean and back.
But since temperatures drop I had to start on petrol (and I have carburetor), so that evaporator would not freeze. It looks like I am running rich during warm-up period, and now system would not oscillate up and down. So I did some "Italian tuning", and it started to oscillate again (but not as fast as before).
I do 99% short (~2 mile) city slow trips to and from work, so the engine does not even warm up properly.
Did I damage the lambda sensor during warm-up period (running rich), or can I somehow clean it? Or just ignore it, and whatever is deposited on the lambda sensor will burn when I stop petrol startups (when weather improves)?