I experienced symptoms again today actually although this time i started car no problems and then half way through the journey the car started to loose power like it was stuttering or firing on 3 cylinders, I backed off the throttle and as it started loosing power it picked up again and then was fine. Maybe the EGR flap then? At least that sounds a bit cheaper then a complete manifold! So, does the cleaner your suggesting clean out the EGR valve or this is purely fuel related? Put in a can of diesel specific upper intake cleaner from Supercheap - they may have to order it in as most only stock the petrol one, and see if it helps.Car just had it's major 5 year/115,000km service so fuel filter was replaced then so I'm doubting the fuel filter. Is the fuel filter OK / been serviced as per the schedule, they get filthy by 50,000kms. Your car will stall because of a fuel starvation, or the EGR flap is cutting the air flow, which is the most likely thing. The thing likely to stick is the EGR flap, diesels don't have a throttle flap. OK, thing is the inlet manifold tumble flaps are just a cylinder filling to suit revs thing, they can't stall the car. Reviving this old thread, im still chasing this issue, Please see graph ive taken a shot of: VAG Com Graph of MAF vs EGR What the computer doesnt seem to like is the MAF airflow actual (yellow line) goes below the green line or specified by the ECM.
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