E39 530d M-Sport Engine Trouble - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 07-03-2008, 05:12 PM
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E39 530d M-Sport Engine Trouble

Hi,

I am hoping that someone may be able to shine some light on a problem I am having. I have a 2003 530d SE M-Sport Touring with approx 114k on the clock.

Driving the vehicle along the A14 I noticed that if I accelerated hard the engine would rev up to approx 2.5-3k and then flutter or may go to 3.5-4k and then flutter as if the rev limiter was cutting in. Placing the automatic gear box into Sport mode seemed to make it worse, presumably becuase it allowed to rev higher before changing up a gear. If you accelerated slowly there doesn't appear to be a problem and if the car is stationary in neutral it will rev up the dial without any problem. It is easily reproducible.

Connecting a diagnostics scanner, the software picked up a fault code of 1260 Delivery Pump Control system failure. Capturing live data seemes to show when the fluttering starts, the rail pressure drops from 1000 bar down to 500 and the pre injection fuel quantity drops to 0. Is this likely to be a fuel pump problem / fuel filter problem or ECU issue?

Any pointers or advice much appreciated.

Regards,

Chris.
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#2 (permalink) Old 07-04-2008, 01:03 AM
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Lightbulb

check fuel filter first. then psi of fuel pump next.

if both prove good... the fuel pressure regulator will be the nxt line of suspect ;-)
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#3 (permalink) Old 08-16-2008, 08:58 AM
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Hi Chris,

I have almost exactly the same problem with my 2002 e39 530d Sport Touring - though mine is fine on the flat but falters going uphill on motorways, limiting speed to 50mph which is pretty alarming.

Thinking it was the fuel lift pump, I replaced that, but to no avail. Reading the post on here 530D power problem - United Bimmer Community - BMW Forum perhaps that is not surprising - if it only works for the first 30 seconds.

My next suspect is the inline diesel pre supply pump, item 9 here RealOEM.COM * BMW E39 530d FUEL PIPE, DIESEL PUMP

darkhorse 737, when you say check the psi of the fuel pump, which fuel pump do you mean? (As far as I know there are at least two - the lift pump in the tank itself, another under the passenger seat, but there may be others?)

Have you managed to fix your car Chris, and if so what was the remedy?

All the best,

Fred
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#4 (permalink) Old 01-30-2009, 04:55 PM
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Please help.

I was just reading your thread and getting very excited as i thought I had finally found the same problem as i am pulling my hair out with!!!

But sadly there was no resolution to the problem, could anyone advise me on a solution to the problem mentioned above,

Thanks kindly!
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#5 (permalink) Old 01-31-2009, 08:19 AM
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Hi Bumbeef,

Sorry to hear of your troubles. My car was cured thanks to a new inline pump - item 9 on here RealOEM.COM * BMW E39 530d FUEL PIPE, DIESEL PUMP

The excellent BMW specialist J+D vehicle repairs in High Wycombe diagnosed and replaced it in less than 30 minutes while I waited. According to their mechanic Mark, these pumps go quite frequently - if you are experiencing a loss of power as per my description then this would be my first suspect. Just try and avoid my amateur route of enthusiastically replacing the completely wrong pump first!

Best of luck with it,

Fred
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#6 (permalink) Old 04-18-2010, 05:55 AM
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Resolution

I had a new fuel pump fitted (the inline one mentioned in the above posts) and this resolved the problem.

Regards,

Chris.

Last edited by qq7; 04-18-2010 at 05:58 AM.
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#7 (permalink) Old 04-18-2010, 07:36 AM
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Not revving over 3000 rpm

Hi, I have the same problem and same fault code 1260, but my car will not rev in neutral/park aswell?
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