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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Running lumpy when idle and running rough



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      10-26-2019, 02:15 PM   #1
Jaymie1989
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Running lumpy when idle and running rough

Hi,



Hope I've put this in the right place.



I have just purchased a E90 m47 320D

It initially was a non runner as it didn't crank. I since found out that the previous owner had put a standard battery in. I have now put the correct battery in and resynced cme/DMS with ista d (which I'm new too)

It's now starting and will run but under idle upto 1700k revs it's lumpy and shaking the whole car and struggles to stay on. I have rev'd the engine to get it to normal temperature and it sounds better after it's been left sitting for a few weeks.



It first had white smoke and multiple error codes. Whilst I have cleared them some have come back straight away with some additional ones.



If possible I wondered if I could get a point in the right direct.



The errors I have I have scanned with Carly although I do have ista.



Here is the errors I have so far.



Engine / Motor
Fault Code: 004A63
Fault Explanation: EWS-manipulatio
Fault Code: 0044CC
Fault Explanation: Boost pressure plate
Fault Code: 004212
Fault Explanation: Glow plug cylinder 1, control
Fault Code: 004222
Fault Explanation: Glow plug cylinder 2, control
Fault Code: 004232
Fault Explanation: Glow plug cylinder 3, control
Fault Code: 004242
Fault Explanation: Glow plug cylinder 4, control
Fault Code: 004B10
Fault Explanation: Smoothness regulator
Fault Code: 003FF0
Fault Explanation: Air flow sensor
Fault Code: 004530
Fault Explanation: Boost pressure control, control deviatio


I think the glow plugs were from when it tried starting and may not have been cleared correctly.



I'm wondering if there is a misfire or maybe the air mass sensor that's the issue.



Could anyone give me any ideas.

I'm aware I might have to clear the codes and read them again.
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      10-26-2019, 02:46 PM   #2
MtechX2
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White smoke in a Diesel engine means there's oil burning or incorrect fuel

, check fuel filter, if it's clogged the injectors won't have the correct pressure so check the fuel rail pressure and maybe pull a injector to see if it's dirty.

Just Remember your torque specs while putting everything back. And careful around the fuel rail very high pressure
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      10-26-2019, 02:50 PM   #3
MtechX2
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Btw, glow plugs do not act like spark plugs
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