Hi guys, my 2-litre 406 break (Bj. 11/1997) with LPG system does not affect both LPG and petrol. I wanted to attribute the evil to the LPG system first (which often mucked already) until I could detect a worsening on petrol (the first time I switched it off so I didn’t notice it). Now it’s clear, however, that it doesn’t work well with both systems. Unfortunately, the break doesn’t have an OBD connection yet! Shit! what could be the causes? Lambdasonde? nsensor Can you check the ZÜndmodul somehow? The candles are quite new and not 3,000 KM old. Do you really need ideas? Buying such an ignition module for pure “test purposes” is also quite stupid, as the part costs well over EUR 100. And also the Lampdasonde hits with EUR 117. Who knows how to get on the track of the evil best? Thanks in advance! Gruss imo