[ChawenHalo]

Originally Posted by Len_Beach

If you suspect it's injectors, have you tried a fuel additive like Archoil AR6400-D Max.

I know they get mixed reviews but it's a cheap option that may give some gains.

Thanks it can't do any harm I guess despite what it says on the filler cap.

I've just did a couple of journeys with some additive. Some foggy brand which is meant to be good : Bardhal or something). In fact it was an EGR cleaner but considering I have had the EGR physically cleaned, and think they all pretty much the same thing.

The difference is that as recommended I shoved the whole flask in with 20L left in the tank and ran the car for 25 mins between 2200 and 3500 RPM Last time I used an additive it was quite dillute and apart from making the car stink it did nothing. This time it seems to have dropped consumption to a record level of 6.8L per 100 km (42 MPG) but that could just be the additive. Will report back when I've filled up in the next few days.

[vladmury]

what are the corrections on the injectors at cold start? you can see that in Inpa live readings.

[ChawenHalo]

Originally Posted by vladmury

what are the corrections on the injectors at cold start? you can see that in Inpa live readings.

I don't have a diagnostic tool fella... Diag for my car needs to be performed when cold. Will follow up when booked at BMW.

I just find it strange that a fully bmw serviced car with only 130 000 km that has alway done long runs should have injector problems...

[vladmury]

Yeah I think its strange , buy yourself a cable from cableshack and its much easier to diagnose your car than going to the dealer all the time. It saves you a lot of money.

[Mboon]

I can't get INPA to work on my n57. It does not show our engine on the list so no live reading etc

[ChawenHalo]

Originally Posted by vladmury

Yeah I think its strange , buy yourself a cable from cableshack and its much easier to diagnose your car than going to the dealer all the time. It saves you a lot of money.

Yes I looked into that and as MBoon says there seems to be a problem with self diagnosis with cable and software for the N57, especially 2010+ built... If you you know any different, please do let us know!

TBH since I've had the car all I've done is waste money selft diagnosting from reading the forums buying parts and getting work done that made no difference (glow plugs, controller).0I dont mind so much as its good preventative maintenance but it sure ain't curing the issue. I think I've found a good friendly and competent (and willing) BMW dealership so I'll let them have a go at he diagnostic at least and the work if they are clear as to what has to be done. Remember that they have a duty to perform and sort the problem out.

[Mboon]

I have a very good BMW specialist on my door step. I will put mine into him if it starts becoming an issue. Please post back if you find the fix. Thanks

[ChawenHalo]

Originally Posted by Mboon

I have a very good BMW specialist on my door step. I will put mine into him if it starts becoming an issue. Please post back if you find the fix. Thanks

Morning fellas.

So my car has been at the dealership for the last 3 days (Mini Paceman courtesy car - don't ever buy that btw).

Despite seeing the symptoms, there was nothing obvious in terms of error codes etc. However being a good garage they kept at it, looking into individual parts that play a key role in the start up procedure, both visual mechanical and electronic inspection. They have found that (big surprise ) the EGR valve and actuator are constantly resetting and adapting during start up.

So they'll replace the part (€360.00 all in) and also replace under warranty the pre-heating control module, the latter being unrelated but to iron out the #4949 "glow control configuration" error code and go from there. Although its unlikely this (new) module is faulty it means they can take out this potential problem in the diagnosis. They're also fairly certain it is the EGR at fault and the consequences are that it generates false readings from the plugs to the module. So they're keeping it for a few more days to do the work and ensure that it is the solution. I should know by Friday and collect it early next week.

One thing that could help others in this diagnosis: I had noticed that the EGR actuator (underneath the black plastic cap) was covered in gooey greenish/ light brown grease (like coolant being mixed with mechanical grease). I had told them nothing but when inspected the operation of the EGR they saw that and explained to me that this part should not be greased as oil contaminates the electrical parts. You could check your cars on cold sart up to see if the EGR is constantly adjusting during start up. The mechanic (senior) told me you could clearly hear and see it.

Will let you know how it turns out (I am confident though). Its a £100 quid part and not difficult to do (just member to purge and refill the EGR cooler with cooling liquid).

[vladmury]

Keep us posted if its solved at the end.

[ChawenHalo]

Originally Posted by vladmury

Keep us posted if its solved at the end.

Oh it will be solved one way or the other. I've been at it for a few months and ain't giving up.
OK got some feedback:
replacement of (new) glowplug preheating control module has erased #4949 error code. Weird one that tbh.

Replacement of EGR valve has pretty much gotten rid of the SYMPTOM but not 100% of the problem.

I'm very pleased with that BMW garage. I've got the guy in charge of the workshop directly over the phone and lets just say that he's determined.

He's sure that something is causing the EGR to give false reading and that its air related.

So they're keeping it and I get to drive some more in that Paceman Cooper (computer keeps correcting Placemat and it certainly is woeful.)

I'll update as soon as.

[dan_gz]

I have the same issue with my E92 325d 2011 N57 and i started by changing the glows and relay to no avail.
I suspect its an injector leaking or playing up.
Have you solved this issue on yours now?

[ChawenHalo]

Originally Posted by dan_gz

I have the same issue with my E92 325d 2011 N57 and i started by changing the glows and relay to no avail.
I suspect its an injector leaking or playing up.
Have you solved this issue on yours now?

I'm still waiting. Will hear back in a few day. The head tech wants to keep it for a few more days. They've already exchanged info with BMW Tech service in Germany and the guy is effing obsessed with finding the problem. Must have an OCD thing like me

Hang on tight chaps, will have an answer soon (I bet Old Steve Grey was correct and just change the flipping admissions collector /intake). Failing that I'll just burn the bloody thing!

[ChawenHalo]

So here it is, and it ain't f@#$ing good news.

The car has spent 4 weeks being diagnosed.

Basically the EGR gave goes ape sh$t on start up. They changed it + exhaust diaphragm that links to the exhaust. Improvement but not 100%. They have identified that its got to do with the air coming in and its management of the EGR. When they close EGR operation (physically) it starts perfect with no fluctuation of idle. They've ran all the in house tests possible and eventually gave it to Germany to run the test on every component involved. The BMW factory technical support in Germany are effectively directly plugged into your car and then request the local mechanics to take various actions and change certain parts. This enables them to test much deeper every module.

So the result is : peanuts They're not really sure. Hats off to them they have really tried and have tested every thing very thoroughly. They have also tried changing many parts going as far as injectors.

The head mechanics told me that when things went this far comes a point when they (BMW Germany) just request for the cars DDE to be replaced (that's the cars ECU in Diesel speak, DME is for petrol engines). A couple of days after the last batch of tests they did say that a change of DDE was the solutíon.

Quote is €1600.00 Euros So given the car was put of warranty in May and its always been BMW serviced I'm going to write them a friendly request, a DDE not being a part that wears out.

I want to impress upon you all that I have been extremely impressed by the way the dealership have dealt with the matter:
this is a 3rd hand car that is 7 yrs old. They've loaned me a car for 4 weeks free of charge. The previous diagnostic and software update only came to €170.00 and this time I only paid ender 300 for the new EGR and diaphragm. Considering the many hours of work they've done on it and the very complicated and lengthy diagnosis, frankly I'm very impressed with their service. Remember that this is France where customer service is normally appalling.

Lastly from what I've been seeing on German forums re: "AGR ventil" solutions do come in easy and have included all what I and others have tried to no avail:
Changing glowplugs (can be very hard as they easily break and require specialist tooling to extract) and preheating module. Changing EGR valve and Intake manifold. I does seem that when Germany dealers have changed the DDE, it has worked.

If anyone on here speaks german, do have a look.

Will keep you updated. Cheers.

[Andy198712]

Wow!
If it were me and I had to foot the bill I’d do an egr delete/map out. As you said it works fine when that’s out the question right?
Just thinking of an option if they won’t help with cost?

Atleast they have tried!

[ChawenHalo]

Originally Posted by Andy198712

Wow!
If it were me and I had to foot the bill I’d do an egr delete/map out. As you said it works fine when that’s out the question right?
Just thinking of an option if they won’t help with cost?

Atleast they have tried!

In know what you mean. IMHO its not that simple on these engines though (I may be wrong).

The N57 ECU / DDE/ DME from memory a 128 bit encryption that cannot be "really" broken into. Even dealerships don't have full access to the cars DDE. Hence you don't really hear about N57 "tuning". The power tuning options that exist simply try to bypass the ECU or falsify the information that it gets. Which in turn only pisses off the cars ECU which cascade into all sorts of error codes. These systems exist to also protect the consumer from falsified ECUs (fake mileage etc) and theft.

The myriad of sensors will detect a malfunctions whether you are blanking or trying to bypass it operations, will issue an engine warning light and eventually force the car into "limp home" mode. DDE will also stop DPF regens.

I spend a lot of time in garages and speaking about cars as a hobby and frankly if it wasn't for the ridiculous legislations car manufacturers have to put up with and they insane investments they require, we'd all have far less problems with our cars. TBH car are more reliable than ever, it really is the electronics that are the problem. Lastly, this car is a keeper and as with all my cars I make sure they run perfectly and it has always served me well. I've many BMW and never any problems with them.

[Len_Beach]

Originally Posted by ChawenHalo

In know what you mean. IMHO its not that simple on these engines though (I may be wrong).

The N57 ECU / DDE/ DME from memory a 128 bit encryption that cannot be "really" broken into. Even dealerships don't have full access to the cars DDE. Hence you don't really hear about N57 "tuning". The power tuning options that exist simply try to bypass the ECU or falsify the information that it gets. Which in turn only pisses off the cars ECU which cascade into all sorts of error codes. These systems exist to also protect the consumer from falsified ECUs (fake mileage etc) and theft.

The myriad of sensors will detect a malfunctions whether you are blanking or trying to bypass it operations, will issue an engine warning light and eventually force the car into "limp home" mode. DDE will also stop DPF regens.

I spend a lot of time in garages and speaking about cars as a hobby and frankly if it wasn't for the ridiculous legislations car manufacturers have to put up with and they insane investments they require, we'd all have far less problems with our cars. TBH car are more reliable than ever, it really is the electronics that are the problem. Lastly, this car is a keeper and as with all my cars I make sure they run perfectly and it has always served me well. I've many BMW and never any problems with them.

The EDC17 can be remapped to delete the EGR.

My 330d N57 was remapped around 3 years ago albeit the EGR and DPF are intact.

It is an ECU out job rather than OBD flash.

[ChawenHalo]

Originally Posted by Len_Beach

The EDC17 can be remapped to delete the EGR.

My 330d N57 was remapped around 3 years ago albeit the EGR and DPF are intact.

It is an ECU out job rather than OBD flash.

To me that always seemed like the most obvious solution rather than physically blocking the EGR. From the very little research I've done most report problems with the engine management side... Which obviously puts me off. I'm just not sure its that simple on these massively complicated and engineered engines. At the end of the day engine development costs car companies 100s of millions. I can safely assume that they've been designed to work with EGR and DPF.

For instance, with an EGR software delete, do all the other ECU's monitoring functions work - eg: service intervals, oil temps and level, DPF regeneration, engine warning etc?

Interesting though many have successfully done it with no probes to report. Presumably of you been running mike this for 3 yrs it been fine. Anything to report? More details would be welcomed.

[vladmury]

I am running also my 325d (m57) with remap and egr off and no issues. I dont see any issue doing it by a reputable tuner

[ChawenHalo]

Originally Posted by vladmury

I am running also my 325d (m57) with remap and egr off and no issues. I dont see any issue doing it by a reputable tuner

Issues: what's written and video above.

I however curious to get more details. Does the bypass maintain diagnostic and warning functions etc. How long has it been like that, mapping issues etc.

[vladmury]

In my case the warming function is not affected neither the regeneration of the particle filter. I have been runing with the remap for 20 000 km

[rasa bmw]

all the egr delete does is stop it from operating,and it onlt really operates at very low speeds..i would take it to bmchiptune,he has the best software/diagnostic kit that you can get.give him a pm

[ChawenHalo]

Originally Posted by rasa bmw

all the egr delete does is stop it from operating,and it onlt really operates at very low speeds..i would take it to bmchiptune,he has the best software/diagnostic kit that you can get.give him a pm

I'm not sure its that simple TBH

As you'll see from the video and the link below the EGR runs in low throttle applications and helps with compression in engine cycles.

http://www.tuneruniversity.com/blog/...ing-you-money/