m3 dies at stoplights - anyone else having this?

[acbtx]

I have a 2011 m3. Once warmed up and I come to a stoplight the engine has a irregular idle, revs slightly then dies. I've been to the dealer and they can't find it. I have tried different gasolines but both Chevron and Shell cause the same problem. Any ideas?

[coloradoe92m3]

Try bottle of techron

[Beamerbiggs]

Happened to me last week. Took it to the dealer and they couldn't replicate it so they just notated my account of the issue. I've had it oscillate a couple times but that was the first time it died.

[MrPrena]

Keep us updated what the problem was. thanks.

[Handy Man]

Mine bobbles occasionally at idle once its warmed up, but hasn't died yet. My dealer didn't have a clue either. Let us know if you figure it out!

[kscarrol]

see these threads...

http://www.m3post.com/forums/showthr...2Brough%2Bidle


http://www.m3post.com/forums/showthr...2Brough%2Bidle

[dsc_off]

I would get a very thorough diagnostic. My first engine did this 'irregular idle' you describe but i ignored it. After several days passed by my engine completely stopped working.

Long story short, I had to buy a new motor for my e92 m3 (spent 27k on brand new s65 engine because didnt have warranty). it had a bad rod bearing issue

my advice: dont wait. get it diagnosed by mechanic. Fix any bugs right away before they become costly

[s85e90]

Sounds like it may be a vacuum related issue. Some of these cars have had the brake boosters replaced due to something similar. How's it run w/ AC on and clutch in?

[F1Venom]

Probably auto start/stop.

[Hujan]

Originally Posted by F1Venom

Probably auto start/stop.

This is what I was going to say, especially if it's only at traffic lights.

[miringrains]

Originally Posted by Hujan

This is what I was going to say, especially if it's only at traffic lights.

And especially when it warms up..

[Edward]

Originally Posted by F1Venom

Probably auto start/stop.

I wanted to make a joke that it's the auto start stop feature, but you beat me to it....and were serious.

[dmk08]

After owning my 08 for a long time and getting my 11 the first time it shut it self off it caught me off guard too. But then I remembered the feature and quickly disabled.

[Kurt_OH]

Originally Posted by dmk08

After owning my 08 for a long time and getting my 11 the first time it shut it self off it caught me off guard too. But then I remembered the feature and quickly disabled.

Where do you live?

US M3s have this feature disabled by default.