Hi, an update on state of affairs; the car still doesn't work well, sometimes starts OK , sometimes not (all 4 glow plugs were replaced by Bosch ones). I have noticed one other symptom: idle revs, normally at around 850, go up to 1250, if I turn on the fan (just the fan, not the AC) until the car is warmed up (some 15 minutes of driving)- this is strange as this little fan shouldn't be such a burdon to the car, so I thought this must be something with the software. Reseted the ECU (unpluged the battery for 10 minutes) and this symptom was gone. Strangely enough, the next day it was back!! What's going on- could there be a fault sensor of some sort or something wrong with the ECU or software? I'm getting desperate... Regards, Peter.