[TylerShubert24]

Having a rough idle almost all the time cold and hot. Getting 2ADF Idle air control, engine speed. Cars been smoke tested twice. No leaks. Lpfp and hpfp are fine. New ish index 12 injectors. No misfires during WOT, so plugs and coils should be fine. Suggestions on where to look next?

Edit
I forgot to add it's a 07 335i

[F31B48]

Does it have any throttle body mods? Have you tried cleaning the throttle body?

[TylerShubert24]

Originally Posted by EvaBmw

Does it have any throttle body mods? Have you tried cleaning the throttle body?

No and no. I will clean it now.

[F31B48]

Try unplugging and cleaning the connector as well. You may need to reset the throttle adaptions afterwards.

[TylerShubert24]

Originally Posted by EvaBmw

Try unplugging and cleaning the connector as well. You may need to reset the throttle adaptions afterwards.

Throttle body is clean as can be and the adaptions have been reset. Still getting the same code. Idle is still the same. I don't know where to go from here. I have new o2 sensors as maintenance maybe those will help. Valves are not perfect but they aren't bad, I did walnut blast it about 2k miles ago. I can post a log of what is happening maybe someone can find something I missed.

[dpaul]

Originally Posted by TylerShubert24

Having a rough idle almost all the time cold and hot. Getting 2ADF Idle air control, engine speed. Cars been smoke tested twice. No leaks. Lpfp and hpfp are fine. New ish index 12 injectors. No misfires during WOT, so plugs and coils should be fine. Suggestions on where to look next?

Edit
I forgot to add it's a 07 335i

Any mods to the vehicle?
Did you reset all adaptations or just throttle valve adaptation?

[TylerShubert24]

Originally Posted by dpaul

Any mods to the vehicle?

Yeah sorry that's probably important to add😂 it's a single turbo car with all supporting mods(big FMIC, chargepipe bov, lpfp, custom exhaust, etc). No PI. GFB3 boost controller. It's on 91 pump gas. Tuned by CD.

[TylerShubert24]

Originally Posted by dpaul

Any mods to the vehicle?
Did you reset all adaptations or just throttle valve adaptation?

Just throttle adaptions we're reset.

[dpaul]

Originally Posted by TylerShubert24

Just throttle adaptions we're reset.

So did this problem begin just after the single turbo installation?

[TylerShubert24]

Originally Posted by dpaul

So did this problem begin just after the single turbo installation?

No it's been st for almost a year really no problems till now.

[dpaul]

Originally Posted by TylerShubert24

No it's been st for almost a year really no problems till now.

I have no experience with single turbo installations and I think it likely complicates the diagnosis. But it would not hurt to reset all adaptations. There's one in there about "idle control" or "air control" that might be relevant.

[TylerShubert24]

Originally Posted by dpaul

I have no experience with single turbo installations and I think it likely complicates the diagnosis. But it would not hurt to reset all adaptations. There's one in there about "idle control" or "air control" that might be relevant.

My experience is it simplifies the vacuum lines and such. Ok I will try resetting those adaptions. I should have a log soon just been really busy with work. (If the reset doesn't fix anything)

[TylerShubert24]

Idle adaptions have been reset resulting in nothing different. Lambda looks a little weird compared to my other logs but maybe just because the idle is acting weird. Here is a log maybe one of you can pinpoint something wrong I can't. Just my luck low pressure sensor decided to stop working over night.

https://datazap.me/u/antistockbmw/id...&data=3-21

[dpaul]

Originally Posted by TylerShubert24

Idle adaptions have been reset resulting in nothing different. Lambda looks a little weird compared to my other logs but maybe just because the idle is acting weird. Here is a log maybe one of you can pinpoint something wrong I can't. Just my luck low pressure sensor decided to stop working over night.

https://datazap.me/u/antistockbmw/id...og=0&data=3-21

Not too much to say about this other than the 145psi low pressure fuel reading and the 12.1 psi ambient. Are you over 5000' elevation?

I know you said it was smoke tested but as you know, the simplest explanation would be either an intake leak of some sort or a PCV leak. Did you test with smoke input to the crankcase (i.e. oil filler cap) as well as intake (vacuum port of some sort lwith thottle body blocked)?

[TylerShubert24]

Originally Posted by dpaul

Not too much to say about this other than the 145psi low pressure fuel reading and the 12.1 psi ambient. Are you over 5000' elevation?

I know you said it was smoke tested but as you know, the simplest explanation would be either an intake leak of some sort or a PCV leak. Did you test with smoke input to the crankcase (i.e. oil filler cap) as well as intake (vacuum port of some sort lwith thottle body blocked)?

Yes I'm over 5000 elevation. Yes I did smoke test both but maybe I missed a small leak it was kinda windy that day. I'll smoke test it again when it's not windy. Also new fuel pressure sensor is on the way.