Losing Power when Accelerating and turning hard

[Zulqarnain]

Hi, in my 320d 2010, I had a DPF filter error on dashboard for few months and recently I started losing power whenever I accelerated hard or hit 70mph on motorway and also on hard turning and bends.

I did not waste time and got my DPF cleaned straight away but as it stands my car still has a same problem of losing power on bends and when accelerating hard. I took it back and they said it is an issue with Oil Level Sensor and I should get it changed. I have called many other garages and they agreed with me that it is unlikely for Oil Level Sensor to cause this problem but they want to diagnose the car to get to the bottom of the problem.

Has anyone else been in a same situation? What could be the problem here? and what should be done to resolve it?

Much appreciated.

Thanks

[drdino]

Fuel supply issue? Can you log fuel pressure as you accelerate?

[Zulqarnain]

Maybe. I took to one garage and he said it is to do with Oil Level Sensor which no one believed, none of the garages believed it is to do with Oil Level Sensor

[Wing Commander]

Not sure if its any help, but quite an easy check

We recently bought an E91 318i. The day after we bought it, after a heavy load of rain, we had power cutting out on bends. It would manifest itself exactly like the power being cut if the traction control came on. It would basically stutter a bit, then come back on fine. The EML would flash a bit, rather than the traction light though.

Then, a few days later, after parking up, it just wouldn't start. Would crank strong, but not fire.

Long and short of it was, we had leaves build up in the drain vents at the bottom the windscreen, on both sides. On the passenger side, this can then overflow into an area that contains the DME (ECU) and flood it. Ours was sitting partially submerged, but would short out some connections on the PCB when it went around a corner and the water sloshed up one side of the PCB or the other.

When the car died in the car park, it had obviously just had enough of the water and something gave way. I cleaned up the board with alcohol wipes etc and it then ran, but roughly. Something on the PCB had been damaged, so it needed a new one from BMW.

If I were you, I would check that you have no leaves in the drain areas!

[BFleming]

In my experience DPF errors on 'modern' BMW's are caused by the system not being able to regen properly, often due to error codes which will not allow regens to take place. Unfortunately these codes will not cause warning lights in themselves, but the blocked DPF will - but too late. This needs proper code reading (I use INPA) to read both current error memory & historic error memory.