F31 330d Xdrive Touring Limp Home?

F31 330d Xdrive Touring Limp Home?

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ajmcampbell

Original Poster:

514 posts

137 months

Wednesday 25th July 2018
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Hullo folks,

Hoping you can help out on this one...

My ma's Sept 2013 F31 330d Xdrive Touring had a bit of a funny turn today; after running at 70MPH for approximately 10 minutes (car does a lot of short distances due to her job as a country GP) the car suddenly lost drive and said 'unable to engage gear' or equivalent. It has the ZF Auto 'box. On trying to restart it and get going again, it said 'unable to select neutral' or equivalent, and ran rougher than a JCB. After waiting a while by the side of the road on the slip road, some traffic officers showed up, and between the three of them they managed to get the car into gear and rolling again. They suspected that it was down to poor-quality fuel, as the car was down to its last 50 miles in the tank, and after a fresh tank of diesel it is now running well again (although it has only travelled for around an hour to get home).

The car was last serviced a week ago at the main dealer, and has only covered 53000 miles.

When I got home, I ran my cheapo OBD to see if I shed any light on the matter, and it threw up the following stored codes:

24CF00 air mass meter ratio measured to calculated too small. 
290B00 EGR CIRCUIT PULSE DUTY FACTOR AIR MASS TO HIGH
287500 Lambda probe oxygen concentration is low
253400 Swirl flap actuator position control swirl flaps wide open / positive deviation.

Any ideas?

My thoughts on potential culprits are:
- DPF, due to short journeys.
- Poor fuel quality.
- A sensor/glowplug/injector fault (cold starts in the winter have become palpably rougher with this car IMO).
- Something else?

I'd be very grateful for any help!

AC.

ajmcampbell

Original Poster:

514 posts

137 months

Saturday 28th July 2018
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helix402 said:
- DPF, due to short journeys.
- Poor fuel quality.
- A sensor/glowplug/injector fault (cold starts in the winter have become palpably rougher with this car IMO).

Won’t be Dpf as no codes are stored for it.
Won’t be fuel as no relevant codes
Won’t be sensor/glowplug/injector fault

May be clogged inlet manifold/egr valve/swirl flaps
May be faulty egr valve/swirl flaps
May be one of other numerous faults

Shouldn’t take a specialist/dealer long to sort with the correct software and diagnostic experience.
Good suggestions on all of those, thanks.
Probably will be taken back to the $tealer as it's only been a week since the service and they may have some ideas. A mechanic friend who spends a lot of time around BMs reckoned the codes pointed to a faulty MAF sensor, which also sounds inherently plausible to me.

DJMC said:
Supermarket fuel?

That's what caused our 2016 X1 to conk out.

Only Shell, Texaco, BP now.
Could be, but thinking about it she almost invariably gets fuel at a local Texaco. Always the cheap stuff mind, never premium.


ajmcampbell

Original Poster:

514 posts

137 months

Tuesday 18th September 2018
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Verdict: Inlet manifold had melted, spraying debris into cylinders 1 and 2! Goosed compression on both cylinders.

Cure: engine replacement, FOC from BMW.

ajmcampbell

Original Poster:

514 posts

137 months

Tuesday 18th September 2018
quotequote all
^^ good advice, thanks.
Thankfully it was a 'straight to BMW UK' job, no arguments.
The only scary bit was the initial night where we were told that the replacement would cost £17.5k if there was no aid from BMW UK, as the car is worth circa £15k at this stage.
Halliwell Jones and BMW UK have been excellent throughout this process.
I reckon you're right to suspect the EGR Cooler, as apparently there is a recall brewing on this...


ajmcampbell

Original Poster:

514 posts

137 months

Tuesday 23rd October 2018
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