D3 MT Cold Rough Idle

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KA020L_L
Posts: 2
Joined: Wed Jan 13, 2021 12:40 pm
Location: Halifax

D3 MT Cold Rough Idle

Post by KA020L_L » Wed Jan 13, 2021 5:20 pm

Hi

New member here of Alpina D3 MT

D3 is got 87k mls , got her just over a week and she is suffering with some issue . After cold start runs fine , but then 2-3 min later rough idle until warm , then runs fine. I suspect EGR blocked...but dont know , what is your advise ?

Also im under impression that this is linked somehow as from time to time i keep stalling her, sometimes 2-3 times in conditions which should never happen to me :D

Pulls strong above 1600 rpm no issue there .

What you guys think ?

Tia

Regards
Alpina D3 #519
Mini Cooper S R56
E46M3 Aegean Blue 1/14
M5E61
:boohoo

CaesarBob
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Re: D3 MT Cold Rough Idle

Post by CaesarBob » Wed Jan 13, 2021 7:30 pm

Welcome to the forum!

Have read through this thread, and the other thread linked in it, quite a bit of dicsussion on D3 MT's and the potential causes of problems. First step really seems to be, get the fault codes read/cleared and rechecked to see where to start looking.

viewtopic.php?f=38&t=24291
B3 3.2 TOURING #062

KA020L_L
Posts: 2
Joined: Wed Jan 13, 2021 12:40 pm
Location: Halifax

Re: D3 MT Cold Rough Idle

Post by KA020L_L » Thu Jan 14, 2021 6:14 pm

Hi

I did read all this before posted .

Codes which i got :

4B90
3FF1
4B10

Sill hoping its the EGR clogged . Will clean over weekend together with MAF.

Regards
Alpina D3 #519
Mini Cooper S R56
E46M3 Aegean Blue 1/14
M5E61
:boohoo

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DonFlintoni
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Joined: Sat Aug 14, 2010 12:04 pm
Location: Cotswolds

Re: D3 MT Cold Rough Idle

Post by DonFlintoni » Sat Jan 16, 2021 5:05 pm

Hi

If the car has had dpf issues in the past then the inlet manifold and the EGR can become seriously gunked up. I had mine off and steam cleaned.

HTH
D3 MT - 174 in Graphite Grey

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DonFlintoni
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Location: Cotswolds

Re: D3 MT Cold Rough Idle

Post by DonFlintoni » Sat Jan 16, 2021 5:08 pm

Allso, it could be a problem with the Pierberg pressure converter for the EGR valve. The vacuum hoses are also known to perish.
https://www.realoem.com/bmw/enUS/showpa ... Id=11_3659
D3 MT - 174 in Graphite Grey

JordanSuth
Posts: 9
Joined: Sun Oct 04, 2020 11:14 am

Re: D3 MT Cold Rough Idle

Post by JordanSuth » Tue Feb 02, 2021 1:03 am

Worth swapping the glow plugs at the same time. I had 3 giving fault codes and the car is idling a lot better now. My car just hit 80k.

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