Hi
Ihave a '55 plate Croma 1.9 8V. It has been fantastic for first 4 years I'veowned it, but I have been having problems with engine light and DPF errors overthe last few months.
Problemsstarted when the car developed less and less power, went into limp mode, then Iwas advised to take it on a long run to force it to regen, at which point it becameworse.
Astroke of luck: I got talking to a main dealer's engineer who said he'd regenit for free. However he said it refused to Regen because the Engine Temperaturewas 'all over the place'. He advised me to change the Engine Temp Sensor.
Ibought a full version of ECUScan, as it became apparent that no one seemed tobe that sure what the issue was, and that I was going to have to pay asubstantial amount for a Regen next time.
BeforeI could use my new toy, the car choked and wouldn’t even start.
Ihad the DPF and the Engine Temp Sensor replaced, and I reset all the necessaryparameters which seemed to solve the problem.
However, aftera few hundred miles, the engine light and DPF Differential Pressure Errorre-occurred and it went into limp mode again. I guess it was not regening undernormal conditions.
Iused ECUScan to force a Regen, but I had problems getting the Engine Temp >70 Deg. It seems that a forced Regen will not occur unless the Engine Temp >70 Deg.
Isit possible that the car will not regenerate under normal driving conditionsbecause it’s not staying > 70 deg?
Whattemp should the engine run at?
Ismy Thermostat malfunctioning?
Any ideas?
PSI logged this Engine Temp graph the other day: this was 1 mile urban, then motorwaydriving. X Axis is approx. 5 samples per second. (1 min = approx. 300 samples)