Hi, New on here myself, just reading about your problem. I am a fully qualified mechanic and reading what you have put, it sounds maybe like its 1 of 2 problems....the first being ECU temperature sensor, which is giving false temperature reading to ECU, this can only be found by going into live data on diagnostics machine when vehicle is cold! The second is failing fuel pump when getting hot, not delivering correct fuel pressure when warmed up! The only way to tell this is to go on manual pressure gauge and run vehicle up to operating temperature! These are two things that spring to mind and are common in most vehicles, hope this helps... Justin
