Rough Idle

Après avoir allumé ma voiture et conduit 100 pieds, j'ai commencé à obtenir un ralenti très rugueux fluctuant entre 400-1000 tr / min. La voiture avait l'impression qu'elle était sur le point de caler à chaque fois qu'elle tombait, alors j'ai éteint la voiture et je l'ai rallumé (problème est parti). Je suppose que ça a à voir avec la vanne de régulation.

Code défaut: "CDBE Idling speed control valve CAN message bank 2"

J'ai lu sur un autre post que le nettoyage de la vanne et le remplacement des tuyaux devraient être la solution. Si quelqu'un a des informations différentes pm moi ou répondre ci-dessous. Si je dois remplacer la valve, quelle valve est recommandée. Il y a l'OEM (400$) et la soupape de ralenti standard du moteur (210$).

La voiture est 2011 m3 avec 21k miles.

Vous venez de remplir le réservoir ?

msan a écrit

Vous venez de remplir le réservoir ?

Non, il est 1/2 réservoir, je n'utilise que du gaz de chevron / mobil afin que cela ne devrait pas être un problème. Je viens de vérifier le câblage et tout semble bon n'a pas vu de dommages.

opihi5 a écrit

Après avoir allumé ma voiture et conduit 100 pieds, j'ai commencé à obtenir un ralenti très rugueux fluctuant entre 400-1000 tr / min. La voiture avait l'impression qu'elle était sur le point de caler à chaque fois qu'elle tombait, alors j'ai éteint la voiture et je l'ai rallumé (problème est parti). Je suppose que ça a à voir avec la vanne de régulation.

Code défaut: "CDBE Idling speed control valve CAN message bank 2"

J'ai lu sur un autre post que le nettoyage de la vanne et le remplacement des tuyaux devraient être la solution. Si quelqu'un a des informations différentes pm moi ou répondre ci-dessous. Si je dois remplacer la valve, quelle valve est recommandée. Il y a l'OEM (400$) et la soupape de ralenti standard du moteur (210$).

La voiture est 2011 m3 avec 21k miles.

N'achetez rien encore ! Cela peut être couvert par une extension de garantie BMW spécifiquement pour cette pièce « DISPOSITIF DE COMMANDE D'IDLE» BMW Part 13417838024 sous BMW SI B010316. Découvrez ceci thread Pour les détails d'abord.

Theodore wrote

Don't buy anything yet! This may be covered under a BMW warranty extension specifically for this part "IDLE CONTROL DEVICE" BMW Part # 13417838024 under BMW SI B010316. Check out this thread for details first.

Sorry if this is not obvious but does this mean that all the issues with the gears being stripped in the throttle actuators are now covered in this extension?

I had a slight rough idle that I lived with for a year. The RPM's dipped ~50 intermittently and the car would shake a little. A couple of weeks ago, she went into limp mode. Ended up being my Vacuum break booster, she finally gave up the ghost. Idle is smooth as butter now, rock solid, no fluctuations.

msan wrote

Did you just fill the tank recently?

I have this issue right after I fill my tank. Luckily, my car is still under warranty right now. My car is at BMW right now to get this looked at yet again. Any idea what it is?

First time I brought it in they said it was an anomaly.

Second time it finally died and they replaced the idle control valve.

Now it's in and going to get checked Monday.

vlt wrote

I have this issue right after I fill my tank. Luckily, my car is still under warranty right now. My car is at BMW right now to get this looked at yet again. Any idea what it is?

First time I brought it in they said it was an anomaly.

Second time it finally died and they replaced the idle control valve.

Now it's in and going to get checked Monday.

If your rough idle only occurs shortly after fill-ups, on E9X M3s it's most likely the "Fuel Tank Breather Valve" BMW part # 13907838281 (see a picture here at ECS). Your dealership may not know this and could end up wasting your time replacing a bunch of components that are not the actual problem. Check out this thread for details.

Logodude wrote

Sorry if this is not obvious but does this mean that all the issues with the gears being stripped in the throttle actuators are now covered in this extension?

Wouldn't that be nice? The answer is no unfortunately, this warranty extension is for a different part then the throttle actuators.

Theodore wrote

If your rough idle only occurs shortly after fill-ups, on E9X M3s it's most likely the "Fuel Tank Breather Valve" BMW part # 13907838281 (see a picture here at ECS). Your dealership may not know this and could end up wasting your time replacing a bunch of components that are not the actual problem. Check out this thread for details.

Thanks for this info!

Theodore wrote

Don't buy anything yet! This may be covered under a BMW warranty extension specifically for this part "IDLE CONTROL DEVICE" BMW Part # 13417838024 under BMW SI B010316. Check out this thread for details first.

So would i have to drop my car off at the dealer, haven't had the problem again. I try to avoid dealers because putting on my cats and re-tuning ecu is a pita.

opihi5 wrote

So would i have to drop my car off at the dealer, haven't had the problem again. I try to avoid dealers because putting on my cats and re-tuning ecu is a pita.

Yes, unfortunately. Wait until you get the codes again though and maybe they will fix it in only one visit. The warranty was extended to 10 years/120,000 miles so you have time.

Theodore wrote

Yes, unfortunately. Wait until you get the codes again though and maybe they will fix it in only one visit. The warranty was extended to 10 years/120,000 miles so you have time.

Well at least I know I won't have to spend money on it. A cold start delete got rid of the problem for now.