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BMW 320D 2.0d 2002 - Intermittant cutting out / slight misfire / vibration #

Posted by Paul Howd on January 10, 2013, 10:39 am

Year of Manufacture *: 02
Engine Size and Code *: 2.0d
( Optional ) Scanner Used: Multiscan
( Optional) Fault Codes: None

As above, sorry if a bit vague-that is because it is!

I have not seen the cutting out symptom but as one increases idle speed there is a distinct vibration at around 1500-2000 rpm but no smoking or any other obvious issues.

Apparently it restarts relatively easily after cutting out

Owner claims problems started after driving through water on the Motorway. I would be surprised if it had sucked water since the intake is well up in the engine bay (Sensible BMW!)

I am minded to check/change fuel filter for water and see how it goes.

Having said that the vibration bothers me!

Any other suggestions at this stage?

Re: BMW 320D 02-Intermittant cutting out-slight misfire/vibration

Posted by Glen Strachan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat1463' width='330' height='300' border=0 style='border:none;'> on January 10, 2013, 5:16 pm, in reply to "BMW 320D 02-Intermittant cutting out-slight misfire/vibration"
Glen Strachan

Could this be a dual mass vibration ?

Re: BMW 320D 02-Intermittant cutting out-slight misfire/vibration

Posted by Paul Howd <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5151' width='330' height='300' border=0 style='border:none;'> on January 10, 2013, 5:40 pm, in reply to "Re: BMW 320D 02-Intermittant cutting out-slight misfire/vibration"
Paul Howd

I wondered about that, there are no other noises however.

In the past I have only seen DMF issues when they are already Falling-Apart bad so don't have any experience of early failure modes.

The absence of any smoke (Which I would normally expect from a misfiring diesel) would also point towards a more mechanical origin.

(Though I can imagine that ingested water and a bent rod might produce a similar effect. But, as I said in OP, I really don't think this has happened)

Re: BMW 320D 02-Intermittant cutting out-slight misfire/vibration

Posted by Peter Rainsley <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5418' width='330' height='300' border=0 style='border:none;'> on January 10, 2013, 7:30 pm, in reply to "Re: BMW 320D 02-Intermittant cutting out-slight misfire/vibration"
Peter Rainsley

Paul,
Three thoughts;
Relative compression test on Pico to see if there is a bent rod.
Leak off test at fast idle for injector anomalies.
'scope electric pump(s), realoem.com will show you what and where.
HTH,
Peter

Re: BMW 320D 02-Intermittant cutting out-slight misfire/vibration

Posted by Paul Howd <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5151' width='330' height='300' border=0 style='border:none;'> on January 11, 2013, 9:23 am, in reply to "Re: BMW 320D 02-Intermittant cutting out-slight misfire/vibration"
Paul Howd

As a matter of interest, On this set up. would anybody know if the crank sensor detects from the crankshaft or the flywheel??

Re: BMW 320D 02-Intermittant cutting out-slight misfire/vibration

Posted by Dave Harney on January 11, 2013, 2:18 pm, in reply to "Re: BMW 320D 02-Intermittant cutting out-slight misfire/vibration"
Message modified by board administrator January 11, 2013, 2:19 pm

Hi Paul,
Should be one of these....

Re: BMW 320D 02-Intermittant cutting out-slight misfire/vibration

Posted by Tony Ludford <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5539' width='330' height='300' border=0 style='border:none;'> on January 11, 2013, 7:22 pm, in reply to "Re: BMW 320D 02-Intermittant cutting out-slight misfire/vibration"
Tony Ludford

Crankshaft sensor picks up from a magnetic reluctor behind flywheel.

What are the MAF figures like? Just thinking the water ingress may have contaminated it?

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