[335ilux]

I took my 07 335i to a trusted shop here in town that does work on many different import vehicles.
The problem was a bad missfire causing the car to go in reduced power mode. Well, all the coils are firing and the plugs are fresh. there saying three injectors are bad and that the injector control module cause them to go bad? Any one heard of this module. I can't find much about it let alone one causing the injectors to go bad. another thing is they said they can't order it that I would have to cause the dealer needs my registration and drivers license? am I getting feed a line of B.S?

[Tim603]

Originally Posted by 335ilux

I took my 07 335i to a trusted shop here in town that does work on many different import vehicles.
The problem was a bad missfire causing the car to go in reduced power mode. Well, all the coils are firing and the plugs are fresh. there saying three injectors are bad and that the injector control module cause them to go bad? Any one heard of this module. I can't find much about it let alone one causing the injectors to go bad. another thing is they said they can't order it that I would have to cause the dealer needs my registration and drivers license? am I getting feed a line of B.S?

Yeah the module is called an EKPM, its a fuel pump control module located behind the rear seat (bolster near door) on the passenger side.

These have been known to fail when overloading system w/ multiple lpfps but I suppose it could fail just from natural causes, just not that common.

https://www.ecstuning.com/b-genuine-...e/16147229173/

Some items are dealer only which means you need a VIN to order and typically have to go directly through them to buy it. The license thing seems like bs, never heard of that before and I'm in the industry.

[335ilux]

the shop is just assuming the ekpm is bad, is it rare for 3 injectors to go bad with in a short time of one another or could it be the ekpm that caused it?
car is bone stock with 108k miles

[YoungBlood]

could be mosfets as well, unless they've verified that's the issue, and it's not just a guess. Could be either very easily

[limitdown]

I would look at the usual suspects first. Precat O2 sensors codes? What are the index numbers of your injectors? Are they leaky? Do the plugs smell like gasoline car sits overnight? Have you tried flashing a different tune.
This is the first time I've heard of an EKPM going bad. It's not impossible, but rare. I've had rare problems before as well, like my footwell module frying.

[feuer]

Originally Posted by Tim603

Yeah the module is called an EKPM, its a fuel pump control module located behind the rear seat (bolster near door) on the passenger side.

How is this linked with injectors? In particular, 3 injectors in one bank?

Originally Posted by feuer

How is this linked with injectors? In particular, 3 injectors in one bank?

Word...OP needs to find a shop that has more experience w/ the N54.

[Bmwfixerguy1]

No no no no! They are saying the injector drivers I come dme went bad not an injector module! You can send your dme to me and I can repair it.. Please get me the faults your car has..
Also when an injector driver goes bad it almost always takes a coil out with it as well so make sure you have a new coil on hand when you reinstall the dme.

They need your license and registration for the dme because it's a coded part to your car and keys

[335ilux]

as soon as I get the car back in my hands I'll do some digging around for codes. I remember multiple miss fire, shop said cyl 1-3, and something about injector banks. I'll dig into it more tomorrow evening

[Tim603]

Originally Posted by feuer

How is this linked with injectors? In particular, 3 injectors in one bank?

True I guess that would be more of the pump module, the injector module would prob be more along the lines of the dme mosfets

[335ilux]

now what?

[335ilux]

codes are as followed

p0303 cyl 3 misfire
p10a5 injectors initialization error (group 1)
p0302 cyl 2 misfire
p0300 random misfire
p0136 02 circuit B1 S2
p050b cold start ignition timing performance

[335ilux]

And I did test all the mosfets along the left side for sh'ts n giggles, (not sure if there injector related) and all seem to be fine

[Bmwfixerguy1]

Originally Posted by limitdown

I would look at the usual suspects first. Precat O2 sensors codes? What are the index numbers of your injectors? Are they leaky? Do the plugs smell like gasoline car sits overnight? Have you tried flashing a different tune.
This is the first time I've heard of an EKPM going bad. It's not impossible, but rare. I've had rare problems before as well, like my footwell module frying.

Both ekpm's and footwell modules are unbelievably common! Forms are covered under a class action suite for extended warranty and ekps go bad at just as high of a rate!

[Bmwfixerguy1]

Originally Posted by 335ilux

codes are as followed

p0303 cyl 3 misfire
p10a5 injectors initialization error (group 1)
p0302 cyl 2 misfire
p0300 random misfire
p0136 02 circuit B1 S2
p050b cold start ignition timing performance

So these faults don't exactly match bad Moses like described earlier in the post.. My recommendation to you would be put the car back together and take it to the dealer so it can be diagnosed properly you don't have to have them fix it but you will spend less money being told what's actually wrong
Some of those faults I don't know because they are in p code format.. If the place you took it dosnt have equipment to read the actual bmw fault code there not as reputable for import cars

Let someone who knows what they are doing fix your car.. I'd clear the faults and see what instantly returns.. Swap coils from that cylinder first see if they follow.. Swap plugs if not.. Pe. Check plugs for fuel soaking.. If so replace that injector and have registered to dme.. If nothing is found with above perform misfire test plan and see if it identifies bad low pressure sensor.. Bad hpfp or bad injectors ect..

Not to mention injectors are warranties to 120k now..

Just take it to the damn dealer we know what we're doing it's what we do all day same engines same cars for years now!

Originally Posted by Bmwfixerguy1

My recommendation to you would be put the car back together

If the place you took it dosnt have equipment to read the actual bmw fault code there not as reputable for import cars

I'd clear the faults and see what instantly returns.. Swap coils from that cylinder first see if they follow.. Swap plugs if not.. Pe. Check plugs for fuel soaking.. If so replace that injector and have registered to dme.. If nothing is found with above perform misfire test plan and see if it identifies bad low pressure sensor.. Bad hpfp or bad injectors ect..

This.

[335ilux]

I'm afraid that's what I'm going to have to do. now to figure out how to get it there with out paying $350 for just a tow

As already mentioned, put all that shit back together and troubleshoot on your own first. You need to go over all the fundamental issues yourself before throwing anymore money at this problem...contrary to what was posted above, not every dealership has capable enough techs to quickly/efficiently diagnose what's actually going on without throwing a ton of unnecessary parts at it.

[Bmwfixerguy1]

Originally Posted by FCobra94

As already mentioned, put all that shit back together and troubleshoot on your own first. You need to go over all the fundamental issues yourself before throwing anymore money at this problem...contrary to what was posted above, not every dealership has capable enough techs to quickly/efficiently diagnose what's actually going on without throwing a ton of unnecessary parts at it.

Well that would be just a down right crying shame if a dealership didn't have a capable enough to tech to fix an n54 misfire lol.. And I thought It was universal that if a dealership installs a misdiagnosed part that they eat that part.. Unless it was an already known bad part and they explained this to the client that we will try the less expensive adoption first and then put it through quality control.. Maybe my dealer dies it just a little differently.. But then again we have a diag team that consists of 7 of us and then like 30 production techs that replace what we tell them to replace..

Originally Posted by Bmwfixerguy1

Well that would be just a down right crying shame if a dealership didn't have a capable enough to tech to fix an n54 misfire lol.. And I thought It was universal that if a dealership installs a misdiagnosed part that they eat that part.. Unless it was an already known bad part and they explained this to the client that we will try the less expensive adoption first and then put it through quality control.. Maybe my dealer dies it just a little differently.. But then again we have a diag team that consists of 7 of us and then like 30 production techs that replace what we tell them to replace..

Would something like this fly at your dealership?
http://www.e90post.com/forums/showpo...10&postcount=3

I didn't think so...that's what the majority of people have to deal with when going to their local dealership. There are countless other examples. Your dealership is the exception, not the standard unfortunately.

[Bmwfixerguy1]

Originally Posted by FCobra94

Would something like this fly at your dealership?
http://www.e90post.com/forums/showpo...10&postcount=3

I didn't think so...that's what the majority of people have to deal with when going to their local dealership. There are countless other examples. Your dealership is the exception, not the standard unfortunately.

In no defense of the dealership because that alignment rate is pretty high.. Were 149..
But the lr toe bolts on the subframe side are notorious for seizing in the arm on the subframe side.. Usually take a lot of work to get them out and you need a new arm as well..

I get the point just bad example.. For 60 bucks you usually get a toe and go job.. Wheel is straight ship it! Lol