Stutters at 1500-2000 RPM

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Jul 23, 2023 | 12:36 PM

#31

Chrizplz

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Joined: Jul 2023

Posts: 2

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From: rogaland

My Ride: 520D facelift

Quote:

Originally Posted by donpb

Are you throwing any sensor codes? I feel you may still have something intermittently failing or clogged. If SeaFoam helped a little, you may need to go through a couple more fueling cycles. Also, if you're using cheap fuel, it can be counterproductive to SeaFoam.

Sor my FB user got hacked had to make an separate acc. There is always something..
but yeeh I actually got 2 new codes. And they are all related to the DPF
I now have
4a2a particulate filter system (new)
452A info particulate filter system
480A DDE particulate filter system (new)

last one basically means my DPF is clogged up

Yeeh as mentioned, the fuel I’m using is from Statoil or shell usually. I don’t think they sell cheap fuel, sure doesn’t feel like it in my wallet

Jul 31, 2023 | 03:23 AM

#32

olliecampbell

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Joined: May 2023

Posts: 21

Likes: 3

From: UK

My Ride: '09 530d MSport Touring Manual

Quote:

Originally Posted by Chrisplz

Now im just confused, when we startet our trip home it suddenly started acting up again. Like it’s almost choking even when we are driving now.

as soon as I unplug the MAF it’s driving fine, way slower acceleration but it’s driving nice. Which takes me away from the DPF.. So the question is, which sensors is communicating with the MAF 🤔 and effecting it like that

The MAF will also disable the EGR. I can't remember if you said you still have your EGR in place or not. But that could be the next test, pull and bung the vacuum line to the EGR.

Jul 31, 2023 | 06:29 AM

#33

Chrizplz

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Joined: Jul 2023

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From: rogaland

My Ride: 520D facelift

Quote:

Originally Posted by olliecampbell

The MAF will also disable the EGR. I can't remember if you said you still have your EGR in place or not. But that could be the next test, pull and bung the vacuum line to the EGR.

ahh i see, well the EGR is still there. So that might be my new problem. So just pull out the vacuum hose for the EGR and put a zip tie on it? And test it?

Aug 2, 2023 | 07:24 AM

#34

olliecampbell

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Joined: May 2023

Posts: 21

Likes: 3

From: UK

My Ride: '09 530d MSport Touring Manual

Quote:

Originally Posted by Chrizplz

ahh i see, well the EGR is still there. So that might be my new problem. So just pull out the vacuum hose for the EGR and put a zip tie on it? And test it?

Pliug the vacuum pipe with a small bolt or similar and then test.

You'll get an engine warning light after a couple of starts whilst the pipe is removed.