Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
I suggest checking the MAS meter and the EGR
Please read above.
Remove the sass air flow meter and check the centre bimetal strip is clean and not covered in oil.
Yes , when dirty it causes this problem normally renewal is required.
Ok Just a thought did you reprogram the new injector.
It can cause this and it wont always show a light on.
Ok a good test is disconnect the harness to the sensor and see if it revs up . If it does then new sensor required.
Clean it and see if a difference.
Brake cleaner or electrical spray will be good.
I cant think of anything at the moment.
I mentioned EGR on second reply
No it wont but it would be stored in codes.