Ongoing Shuddering / Jerking Issue 435D F30 XDrive

[SteeleyScott]

Hi all,

For the best part of a year now i've been experiencing a shuddering/juddering/jerking issue in my 435d specifically when cruising at a consistent speed at Low RPM (1,200-1500 ish i'd say). It feels like i'm on and off the power. But I know it's not my foot as the same symptoms can occur when i'm using cruise control too.

I'm not getting any dash errors, though when connecting to the OBDII port I could see two errors, though i'm not sure if either of those could cause the juddering symptoms i'm experiencing?

283300 - Oxygen Sensor before catalytic converter, heating, activation, Open circuit - Intermittent

282D00 - Lambda Sensor heater before catalyst, activation, short circuit to plus - Permanent


I also suspected it could be the drivetrain/transfer box causing this issue based on what i'd read online, so I recently flashed my car to run in RWD mode using Xdelete. Unfortunately the problem has persisted. So I guess I can rule out it being the transfer box or Xdrive related atleast, which I guess is good news.

Also worth mentioning that the juddering occurs whether i've got traction control on or off, whether i'm in manual or auto, always around that specific RPM range and much worse on a cold start, it actually gradually goes away as the car/oil heats up.

Lastly i'm not sure if its useful information but i'm fairly sure this only started happening after BMW recalled my car for an EGR cooler replacement. But I can't say that for absolute certain, just thought it may be useful information relative to what i'm experiencing.


With regards to the above does anyone have an idea what might be going on here, have experienced this themselves or could point to what it might be? I'm happy to go to a specialist but at the rates they charge per-hour i'd like to try and narrow down the investigation a little first ideally.

Really appreciate any insight into this and apologies for such a long first post. It's really began to ruin my experience with the car now.

cheers

S

[dworthy]

Welcome to the Forum!

What have you done to inspect the oxygen sensor? It's right there saying that you have a failure, and it's responsible for mixture control, that will cause the car to jerk or miss.

[SteeleyScott]

thank you!

I haven't inspected it no, I'm not technical and I did call a local BMW specialist this morning who advised its unlikely the oxygen sensor would be causing the symptoms i'm seeing. That said, I cant vouch for the quality of that advice.

Where abouts is the sensor located?


Also worth mentioning BMW have called this morning to tell me that my car is due yet another recall for EGR/EGR Cooler. So i'm wondering if all this is actually related. Is it possible that a faulty cooler could've affected the Oxygen sensor and made it overheat? I've heard the recall is to protect the inlet manifold but not sure what else....?

[SteeleyScott]

thanks!

Not much in the way of inspection myself, i'm not technical though I did ask a local specialist this morning, their opinion was that it's unlikely related to the problem i'm having.... which is at odds with what im reading on the forums....but hey thats the great thing about asking here too right?

Also worth mentioning BMW did call me this morning to let me know that my car is due yet another EGR Cooler / EGR recall, despite the one in April 2021. I'm wondering if this is all related now....Is it possible that the faulty EGR cooler could've caused the damage to the oxygen sensor?....I know the recall is apparently related to the EGR/EGR Coolers causing damage to the inlet manifold...but wondering if I can get BMW to fix the sensor too if its on them?

[328 Power 04]

Your codes say more that the sensor is disconnected. Is it?

Is this car modified?

[dworthy]

+1

The oxygen sensor could very well be sending erroneous data to the DDE, that will cause mixture issues thus jerking/shuddering.

[Lucidbassman]

Hi there, did you ever get to the bottom of the issue? I have the same thing.

[dworthy]

Good question, the OP has only 3 posts, so I doubt they will be coming back.

[Lucidbassman]

Hi, for anyone in the future. Had my Indy investigate as I had the same symptoms as SteelyScott.

He plugged the laptop in and found faults stored in DDE relating to oxygen sensor before catalytic converter and charge air pressure to low.

Pasted from his report:

Carried out test plan on oxygen sensor before catalytic converter and tested, outcome requests replacement oxygen sensor and delete of adaption and retesting.

Carried out test plan on charge air pressure too low and carried out air mass system test, passed, suspect intermittent failure of charge air pressure solenoid valves, recommend replacing oxygen sensor before catalytic converter and customer to test after.

Action:

Replaced oxygen sensor before catalytic converter using Genuine BMW Parts.

Cleared fault memory and reset adaption values. Carried out roadtest and retested for faults, no faults returned to DDE.
Customer to test and monitor for drivetrain errors and report back if returns, may have to replace both charge air pressure solenoid valves.

Update:

Oxygen sensor replacement has fixed the problem.