Is 220D Alternating Revs

[mikeh1980]

Hi all, i have a 2006 is 220d. It seems quite sluggish. When i stop at the lights or sit stationary it sounds like a tank and the rev needle jumps from around 800 to upto 1200 revs and straight back down, and the car judders feeling like a rollercoaster when sat stationary. If i put the a/c on this seems to stabilise but not totally remedy it with only slight rev alternation. I have the egr thing cleaned several times and on all occassions it was badly choked is there some underlying issue

regards

Mike

[steve2006]

Hello and welcome to the LOC.

First thing to do with any modern vehicle is to have a code read done.

Diesel engine revs are controlled by the amount of fuel being injected into the engine so pump or injectors may need looking at but have the ECU read 1st.

[Steve]

May need a replacement EGR instead of cleaning it