[KK0124]

Morning all,

Looking for some help please.

I have a 57 plate N47 (D20A) 320d touring. Timing chain failed so I replaced the engine.

Car starts and runs great, revs freely up to 4k etc. The problem is when its driven under load, its pulls well up to 3k revs then completely loses all power....almost stalls but doesnt quite then recovers to drive fine under 3k and does the same if i go beyond 3k revs.

Checked the live data and all looks normal except the fuel 'pre supply pressure' this drops significantly down to 1 bar when i hit 3k rpm. I compared the live data with my 120d and all parameters match except the pre supply pressure which drops to around 9 bar when i hit 3k rpm rather than the 1 bar.

Im thinking its either the pre supply and might replace the pump in the tank....or its a red herring and the pre supply dropping when i hit 3k rpm because the ECU is telling the car to go in to limp mode..

Any suggestions would be greatly appreciated.

Thanks in advance, Kris.