I own a 2003 Alfa 156 Facelift 1.9 JTD 16V Mjet 140 HP and recently I've noticed a loss of power at lower revs.
I went to the dealer shop and they told me it was a problem with the EGR valve that was completly full of dirt and stuck. After they cleaned it, I noticed that the car in fact became a little more responsive and less black smoke came out of the tail pipe.
However I still feel a great loss of power up until it boosts at about
2800-3000 RPM, I don“t know if its me but the car doesn“t feel right, it appears its boosting too late.
I'm almost absolutely sure that before my car "boosted" at about 2000-2100 RPM, and now between gear changes, say from 2nd to 3rd, I notice a gap of power and a much longer turbo lag than normal.
Can anyone with a similar car bring some light to the subject? Can this be a problem with the MAF sensor, or could it be that the turbo is broken? ( I can hear the turbo whistle at about 2100 rpm but no boost can be felt until it revs to aprox 2800rpm)
Thanks in advance...