a dreamlike, my Volvo V40 from 1998 with 1.8 benziner with ‘ner Prins bin Gasanlage’ has been on strike for a few weeks. to the current situation. during the day 25 °C and it starts 5 times without mucking without problem. now in the evening with 12 °C he strikes again… the same two weeks ago in the middle of the night at cold he does not want to go with start aid anymore, to that again a week before on work at 20 ° approx. he does not want any more and start aid also does not bring anything and we had to push. I have to say, battery is almost new and full, light engine brings still 13.6 V, spark plugs have been made again last summer. Starter spins also. At first I thought it was on the main relay what lies in front of the control unit, because the ADAC had previously read the error: “control unit gets sub-range” but also has no effect on the new relay. Today at noon I have changed the fuel pressure regulator because I had the assumption that this problem, but he still doesn’t want to sit by now whether the head can’t have any sensor control of the mixture or not have a fat temperature.