Year of Manufacture *: 2005
Engine Code or CC *: 1.9 PD
( Optional ) Scanner Used: Autocom
Vehicle emits an excessive spurt of black smoke under acceleration from a cruising speed of around 40 mph upwards, there is also a hesitation when this happens, it then clears and everything is normal. Only fault codes are related to heater plugs 1,2,3,4 which we replaced, EGR valve was inspected and found to be absolutely mucked up as was the inlet manifold, we removed the manifold and cleaned it out and replaced the EGR but this made no difference. If the EGR is disconnected by removing the Vacuum pipe the problem disappears, so we monitored the vacuum supply with a vac gauge to see what was happening. The vacuum seams to be switching on and off quickly until the above mentioned driving condition, from a cruising speed of 40 mph and upwards when the vacuum drops off very slowly before finally getting to down to zero. I suspect the EGR control solenoid but it looks like its housed in a module and I guess pretty expensive. Does anyone have any ideas or has anyone come across this problem before?
Mark
Sorry for the long post
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