My 105 is on LPG and fuel. It runs fine on LPG, on petrol it idles OK in neutral, but sometimes as soon as you put it in drive and just slowly move around, like turning a corner slowly or in the parking lot it stalls and also misses. But, drive around on fuel and at times, its seems perfectly fine. All the electrical issues are obviously OK as it runs on LPG without issue. Are there any simple tests I can do before getting in a mechanic with and OBD1 scan tool or something. Last time I had this it was the Crank Angle Sensor, but that was only a few years ago, I can't imagine its gone again, massive job to replace. Any help is greatly appreciated. Thanks.