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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > E90 320d/163 engine stops randomly



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      08-16-2013, 04:44 PM   #23
bimmerbilly
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I'm bumping this post because i have the exact same issue as this. I managed to swap out the DDE relay but unfortunately, it didn't solve the issue.

I had the turbo replaced a few months ago, so i have a strong feeling it won't be related to that - but you can never write these things off i suppose.

Any ones thoughts on the crankshaft sensor? I am having issues where at any point, with no warning the car could cut, any speed what so ever or even idling. It can be quite dangerous as you can imagine but it doesn't happen that often that a indie wouldn't be able to replicate it on demand. I've read that it might not throw any error codes if was related to the crankshaft sensor, once plugged in.

Any other thoughts would be amazing!

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      08-21-2013, 02:29 PM   #24
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Quote:
Originally Posted by MX20 View Post
Sorry all, I did not visit the forum for a very long time.
In my case it was a relay. I do not know which one but FWIW it was blue
I just had to replace that relay on my 320d as well, it was cutting out just after starting the engine. Google was my friend and was an easy fix
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      08-27-2013, 06:01 PM   #25
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Rory what kind of symptoms were you having to change the DDE relay?

My 320D E92 At is not responding to throttle out at slow speed very randomly and when i break to a stop it then cut outthe engine?

Anything like what you experienced?
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      08-27-2013, 06:04 PM   #26
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Bimmerbilly did you ever solve the issue I have the same problem.
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      08-29-2013, 05:42 PM   #27
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Quote:
Originally Posted by CnSky View Post
Rory what kind of symptoms were you having to change the DDE relay?

My 320D E92 At is not responding to throttle out at slow speed very randomly and when i break to a stop it then cut outthe engine?

Anything like what you experienced?

No , mine was only occasionally when starting the engine, it would turn over then nearly catch but fail and give warnings on the dash. Hope you get your problem sorted soon
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      08-31-2013, 06:04 PM   #28
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I had same problem as described changed The blue relay but did not help.. Then changed The cranc shaft sensor and The at has been perfect since! Cheap part but horror to shift!!!!
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      05-14-2015, 10:34 AM   #29
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Hi all, I am having the same issue on my E91 320D 163hp 2005. (at least symptoms look very similar) First of all sorry for my English, not my mother language.
Time to time especially when I stop on red light or parking, car is loosing rpm, engine gets weird vibrations and turn off.
It can happen after just 20 minutes of easy driving, so I don't think any electronic is getting too hot. It happens very randomly, sometimes I drive 500km with no problem.

At this situations I cannot start engine until I get the key out (lock the car) and wait a minute.
If it happens on highway engine stops and stars almost immediately. You would feel kind of forward-backward shake. (I am afraid it can damage main chain)

Diagnostic doesn't point on the source of my problem. As preventive step I already replaced sky-blue relay.
December-April I was enjoying my car, now it happens again. It means relay was not problem in my case.

If it would be crankshaft sensor, wouldn't diagnostic confirm that? I am not tight-fisted to spend 50EUR on new crankshaft sensor, I just always prefer to work logically.
(meaning I know what/why I am doing)

I would be glad if you guys share your experience. Thanks!
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      05-14-2015, 11:56 AM   #30
gIzzE
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Quote:
Originally Posted by g1de0n View Post
Hi all, I am having the same issue on my E91 320D 163hp 2005. (at least symptoms look very similar) First of all sorry for my English, not my mother language.
Time to time especially when I stop on red light or parking, car is loosing rpm, engine gets weird vibrations and turn off.
It can happen after just 20 minutes of easy driving, so I don't think any electronic is getting too hot. It happens very randomly, sometimes I drive 500km with no problem.
Have you checked the hoses for an air leak?
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      05-14-2015, 04:07 PM   #31
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Most ECU's treat the crank sensor input as a fairly major primary input. If the signal vanishes, it simply assumes the engine has stopped, and thus fuel delivery stops.

It often wont flag a fault code, because it just assumes the engine has physically stopped, and thus doesnt see it as a fault.

Sometimes ECU's will use alternative speed inputs (say the cam sensor) to keep running, and those ones will then often be able to realise the crank sensor is broken and log a fault code for it. Other times the ECU might notice the crank signal becoming unstable or jumping around, and will log a code for that.

Essentially dont assume no fault code means the crank sensor is fine.
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