Still no torque below 2500rpm
Just had my 1.9 diesel into a local Newcastle based Alfa dealer to help diagnose my problem - no torque below 2500rpm.
According to the diagnostics there was a) boost pressure error and b) egr and airflow error. The dealer cleaned the egr valve and boost pressure sensor but no improvement.
As I assume there are no other error messages showing what should I check next ? Would it be correct to assume that if the air flow meter is defective then an error message would show ? How to confirm if the turbo is finished ?
My symptoms are : no torque below 2500 rpm, no sign of black smoke (as best I can tell from the drivers seat), no throttle response in 5th or 6th on the motorway (because the revs are so low, I have to stay in 4th to keep them up), fuel consumption seems reasonable.
Any advice appreciated.