[longnvu]

I need help pinpointing what area i should be looking at. The car starts up with a little dip about once or twice within 7 seconds and then idle. The car drives great still, it just has these codes that comes on after taking it out 3-4 times. Any suggestion would be appreciated.

[longnvu]

anybody????????

[bimmerdavid]

Does it have a long crank? Or starts up normal, just cold idle is bad?

[longnvu]

It starts up instantly. Idle just dip twice every time when i start the car. Then it runs fine after the two dips.

[bimmerdavid]

Originally Posted by longnvu

It starts up instantly. Idle just dip twice every time when i start the car. Then it runs fine after the two dips.

Check/Clean your MAF sensor

[longnvu]

I have already done that still same results :/ new sparks plugs too

[ctuna]

clean vanos solonoids,(or replace) seems to be a common one easy to do.
See Diy section usually that has a code if they are sticky.
Did you get the codes decoded.

2A2E mixture control
2A2F mixture control 2

found these in the maintenance section.

http://www.bavauto.com/Assets/inst_pages/bas-sr300.pdf

http://www.e90post.com/forums/showth...t=63639&page=2

[longnvu]

It has new vanos solenoid so that can't be it. Plus it has fresh oil less then 300 miles

[MikeD8891]

OP, did you ever figure this out? I have been having the exact same symptoms on my 2006 330xi for about a month or two. Starting is fine but idle drops after start and I have to wait a minute or two before driving. SVS light is on (just lit up this weekend) and I've pulled the following codes:

2A2E mixture control
2A2F mixture control 2
2A37 valvetronic, eccentric shaft sensor
2A47 valvetronic, eccentric shaft sensor
2A38 valvetronic, monitoring, sluggish movement

From the searching I've done so far, sounds like could be one or a combination of the following:

High pressure fuel pump
Clogged injectors
Eccentric shaft sensor
Software update
Dirty MAF sensor (I'm kinda ruling this one out myself)

The car has 80k miles on it, so I have some other work that I have been putting off on it such as oil filter housing gasket and new plugs (80k is close enough to 100k IMO). I'm probably going to bang this all out in one weekend, but don't want to throw needless parts for the fault codes at it. Anyways, if you have any thoughts or comments, they would be greatly appreciated. Thanks much in advance.

[Chriztofor]

You guys need to invest in a peake tool. See my sig.

[MikeD8891]

I believe the fault codes I put in my post were BMW fault codes. I retrieved them using the BMWLogger program from smooth1 (the same link that is in your sig). I guess I don't see how the peake tool would get me any further along then where I already am...

[Chriztofor]

Originally Posted by MikeD8891

I believe the fault codes I put in my post were BMW fault codes. I retrieved them using the BMWLogger program from smooth1 (the same link that is in your sig). I guess I don't see how the peake tool would get me any further along then where I already am...

I only used the bmwlogger program for resetting the battery. Not sure how it performs reading codes. Looks like it is not doing a good job for you. Just as a fyi, here is the peake manual. http://www.peakeresearch.com/manual.htm

Peake saved me lots of money. Used it for my e46 and now with my e90.

[longnvu]

I found the issue, they we're cause by rotted vacuum line

[pruettfan]

Originally Posted by longnvu

I found the issue, they we're cause by rotted vacuum line

Would you mind providing a little more information, perhaps a photo? I have the same issue, replaced all 4 02 sensors and MAF sensor but still get the 2A 2E and 2a 2F errors from time to time but the car runs fine. I have had an in dependent look at it and they suggested the o2 sensors but that has not solved the issue (did increase MPG a bit though) I have 188,000 miles on mine so I suspect I will be finding more little issues like this as I shoot for my 250,000 mile goal.

[3s4u2]

Originally Posted by longnvu

I found the issue, they we're cause by rotted vacuum line

Could you provide a little more info in case someone else runs into the same issue?

[longnvu]

I replaced all the oil separator lines. If you remove the lines you can actually save some money but replacing the lines with rubber hose from auto zone or oreillys. Then just wrap the heating element around the line and cover it up with some wire loom

[longnvu]

I replaced my intake manifold with a f10 with the 3 stage intake manifold with the heatsink and custom my oil separator lines. Whenever i remove the lines they broke like crackers. I also cleaned out all the gunk thats in the oil separators and connectors.

[pruettfan]

I still am getting this issue from time to time. Mechanic suggested changing the O2 sensors which I did a while back, I have changed my entire oil breather system when I had to do my starter, the Vanos is fine, new MAF, clean air filter and on and on. I am up to 205,000 miles so I don't really want to put a bunch of money into having a mechanic replacing parts searching for answers, I may just bring it to BMW and see if they can come up with a precise answer. I need to get a smog test and the code just popped up so I cleared it using my Peake tool but the smog guys said the system was not ready so I have to bring it back. Has anyone figured this one out????

[MikeD8891]

For me, I did both solenoids and the eccentric shaft sensor. I kept cleaning the ESS with the electrical version of MAF cleaner which kept the codes from coing back dat to day. Then once the car was ready for a valve cover gasket, I did the ECC. It was a royal pain in the ass, given the lack of space. Make sure you get the aluminum bolt kit and have a torque wrench. Also check the head bolts when valve cover is off.

[MikeD8891]

Also, if you are on the original ESS with >200k miles you should buy a lottery ticket while you are at it.

[fravel]

Originally Posted by pruettfan

I still am getting this issue from time to time. Mechanic suggested changing the O2 sensors which I did a while back, I have changed my entire oil breather system when I had to do my starter, the Vanos is fine, new MAF, clean air filter and on and on. I am up to 205,000 miles so I don't really want to put a bunch of money into having a mechanic replacing parts searching for answers, I may just bring it to BMW and see if they can come up with a precise answer. I need to get a smog test and the code just popped up so I cleared it using my Peake tool but the smog guys said the system was not ready so I have to bring it back. Has anyone figured this one out????

Take your car to an indy shop/dealership and ask them to reset your adaptations. I was having similar problems, had the car checked out physically by 2 separate indy shops and neither could find anything functionally wrong with the car, but for some reason it was running pig rich.

Tech at 2nd shop suggested adaptation reset, light hasn't come back since and my idle has been rock steady.

EDIT: Nevermind, light came back.

[Volasko]

I'm in the same boat as Fravel and Pruettfan, same stupid 2A2E & 2A2F errors that wont go away. I have been trying to fix these stupid mixture codes for almost a year. At first I thought it was my CCV system. I replaced my oil seperator (it was clogged) and all plastic lines (some cracked) which helped but eventually it came back. Then swapped DISA valve as actuator was broken. Thought it was fuel related, did a pressure test and nothing. Also did a smoke test to see if I had any leaks, nothing. Then swapped MAF sensor with new and it helped for a few months, but again it eventually came back. I'm not willing to toss money at new O2 sensors. Seems common on 330i's.... I'm running out of ideas. Posted a reply to maybe some help from this old thread....