[houtan]

Thanks. Just took a look at mine, they are definitely fake Delphi’s. Super annoyed. Never ordering from rockauto again. This is most likely what caused my car to go berserk at the last half mile race I went to.

Car has been running good on my old stock coils. Still on stock tune. But I am going to turn the boost back up in the next couple weeks.

[houtan]

Originally Posted by vespa

RockAuto specializes in counterfeit components and while many of their parts are real and many of the fake ones still work just fine, you'd be wise to make any purchases there under the assumption that the parts will be illegal knock-offs.

Delphi uses 30% glass filled nylon 4/6 made by DSM and you will see DSM's >PA 46< markings on each plastic component if your part is real. You can see those markings along with the GF30 (Glass Fill 30%) in the part on the right in the attached pic. Note also that glass fiber filling gives parts a distinct sparkly texture whereas the fake parts are smooth and shiny like the recycled trash bags from which they were made.

Just a quick update. I contacted Delphi to determine whether or not the parts I received from Rock Auto were genuine because I wanted to figure out what I want Rock Auto to do. I sent Delphi and Rock Auto the picture you shared with us. Rock Auto was saying the parts were genuine and I could submit a claim for warranty replacement. But I wanted to hear it from Delphi.

Delphi said their coil packs are made in two countries, China and Portugal. Both versions should have the markings in the first picture printed on them. Only the versions made in Portugal will have the PA46 and other markings. Delphi says both coil packs in your picture are genuine if they have the printed letters/numbers like the first picture below.

Here are the pictures I received directly from Delphi technical support. Both countries of origin should have the markings in the first picture. You will see in the second picture both versions of the genuine part, the one on the left is from China and the one on the right is from Portugal. Only the version from Portugal has the markings underneath the clip.

Either way, the part manufactured in China caused electrical faults in my car and my friends car. Both of us purchased from Rock Auto.

[Pladi]

Delphi is probably like god damn these BMW owners again hahahah

[AJL]

Originally Posted by houtan

Either way, the part manufactured in China caused electrical faults in my car and my friends car. Both of us purchased from Rock Auto.

Good to know... I checked last night, and both sets of coils I got from FCP are without the PA46 markings, and both sets caused electrical issues.

[vespa]

Originally Posted by houtan

You will see in the second picture both versions of the genuine part, the one on the left is from China and the one on the right is from Portugal. Only the version from Portugal has the markings underneath the clip.

Really? Delphi authorizes the production of these parts without the fiberglass fill? And without any material type labeling? Under the same part number as the original PA46 GF30 design? I was pretty disturbed by the bogus junk parts on the market, but now I'm really concerned to learn that Delphi is actually producing their own junky counterfeits.

Interestingly, FCP Euro offers a "quality: genuine" coil for $60 in addition to a "quality: OE" Chinese part for $23.

[houtan]

Originally Posted by vespa

Really? Delphi authorizes the production of these parts without the fiberglass fill? And without any material type labeling? Under the same part number as the original PA46 GF30 design? I was pretty disturbed by the bogus junk parts on the market, but now I'm really concerned to learn that Delphi is actually producing their own junky counterfeits.

Interestingly, FCP Euro offers a "quality: genuine" coil for $60 in addition to a "quality: OE" Chinese part for $23.

The picture of the Chinese version on fcp euro has pa46, so I would assume that is not the part that comes In the mail.

I am pretty disturbed as well. What coil packs are people buying other than oe Bmw?

I have heard eldors are good. Is that true?

[AJL]

Originally Posted by houtan

The picture of the Chinese version on fcp euro has pa46, so I would assume that is not the part that comes In the mail.

It's not, here are photos of what I received from FCP.
https://www.fcpeuro.com/products/bmw...12138616153kt1

Hmm...I've seen a bunch of issues w/ GN10571 coils in random threads lately.

Anecdotally, I've been running these Delphi GN10328 coils off of Amazon for the last ~4.5 years/~50K miles on an E60 tune with absolutely no issues (I run an N54):
https://smile.amazon.com/Delphi-GN10...ct_top?ie=UTF8

[houtan]

Originally Posted by AJL

It's not, here are photos of what I received from FCP.
https://www.fcpeuro.com/products/bmw...12138616153kt1

mine are exactly the same. Except the second set of numbers printed on the side of mine are: 05716.

[The Silver Slammer]

If this is all true about these Delphi (Non-OEM) coils, where have ya'll been able to find the Delphi OEM coils at for a reasonable price? I'm thinking I may have something similar going on.

[weehe126]

Originally Posted by The Silver Slammer

If this is all true about these Delphi (Non-OEM) coils, where have ya'll been able to find the Delphi OEM coils at for a reasonable price? I'm thinking I may have something similar going on.

By crossing your fingers when you order.

[Pupsaiden]

I know it's been a while since the last post in this thread, but I'm now experiencing a very similar problem. However, I do not experience ANY increase in voltage, it only drops after I WOT on mhd stage 2+ and mentioned Delphi Coils (n55 335xi).

Here's logged datazap
https://datazap.me/u/pupsaiden/log-1...solo=3&mark=23

The error codes I get are:

384A - Alternator, plausibility, electrical: Calculated

3446 - BSD, message; oil condition sensor: Missing
378F - BSD, message; electric coolant pump: Missing.
3847 - LIN/BSD, message; alternator: Missing.
38A4 - BSD, message; intelligent battery sensor(IBS): missing

[bbnks2]

wow just order Eldor coils and be done with it lol Never heard of anyone ever having issues with them and they are the latest revision/part called for on newer cars I believe.

[Jokeezy]

Hello,

Hoping this thread isn’t dead..

I’m facing the same electrical issues,

Leading 2 times to limp mode with complete shut off of the car.
Now I can repeat the failure and I restart the car when I see a 11.9V stable tension not going back up.

I’ve replaced the battery and the DDE relays (blue relays under the hood).

Still got this failure when accelerating hard : the tension drops and doesn’t go back up like the alternator turn off and doesn’t charge anymore.
When riding nicely the tension flows and can get to 11.9-12V but goes back up when decelerating.

I’ve read this thread and saw I have the same « low quality Delphi coils » + the car used to be MHD tuned stage 1+ (I believe) before I bought it. It normally has to be back to stock now.

After I replaced the waterpump, the damper pulley, and the accessory belt I started having these electrical issues.

1st failure I had high tension errors on a lot of sensors, 2nde one was mostly low tensions.

Now I usually got the following error codes.

Do you guys think it’s a coil issue ?

I have already bought a new alternator but haven’t replaced it yet.. don’t want to kill it and I’d rather be sure it will solve the issue..

So my suppositions are :

- new waterpump failing
- alternator dead
- coil issue as you mentioned

Hoping someone keep looking at this thread it’s been weeks already looking for a similar issues..

[xxMike61]

Originally Posted by Jokeezy

Hello,


Do you guys think it’s a coil issue ?


Hoping someone keep looking at this thread it’s been weeks already looking for a similar issues..

Hey man! Recently went through the same exact thing. Sitting in the drive-through when I got a "charging malfunction" on my navigation screen. Battery was replaced in November so I really doubted that was it. Spent like 40-50 minutes researching once I got home and came across this post.
Was shitting my pants at the thought of it being an alternator or water pump or t stat.

houtan definitely saved me. I too doubted that it could be the coils but I remembered that I had this weird combustion code in cyl 3 for months now. So i figured i'd give that a shot first. Luckily I had a few old OEM coils laying around after replacing them about 5 years ago. Replaced them the next morning and cars been running great since. Battery back up to normal voltage.

Ordered Dinan coils and IGK plugs just to be thorough. Will install them this weekend.

Pictures:

Before




After



Good luck!

[Jokeezy]

Hello !

Thanks for your answer,

Since I didn’t have any misfire codes, I went ahead and replaced :

- 4 relays (the 2 blue and the 2 black ones)
- the battery which wasn’t holding the charge anymore
- and I did buy a new alternator

My issues were indeed coming from the alternator. I didn’t had any other voltage issues since I replaced it. But I made a mistake while buying one so it’s working in safe mode running a stable 13.8V (no communication with BSD) so I’m waiting for an original one.

I will keep in mind the coils issue since I understood it can throw BSD errors even if no more voltage issues, so I keep monitoring error codes just in case (I do have the shiny black coils but do not know when they were replaced).

> if one of you wants a new Denso Dan1133 just let me know (works for 335i e92 built starting 03/2012)

PS : do you think I had to replace the alternator ? I do remember the voltage going up to 15-15.2v after my first voltage issue + limp mode

[Jokeezy]

Hello everyone,

As mentioned in my last post :

I replaced the battery, the DDE relays, and recently installed a new alternator (used one from another 335i). New Alternor is working and communicating with the DME so everything ok except for a strange 2C01 error code and engine light on the first drive test (fuel pressure low pressure) => after connection verification no more apparition of this code (bmw electronic joy ?)

BUT

I succeeded in reproducing the voltage drop issue and to throw all the BSD error codes (oil sensor, generator, waterpump, IBS) and as described no high voltage codes.. so I will now try the coils replacement.
I ordered NGK coils and Bosch plugs and will replace it next week hoping that my new alternator / regulator wasn’t fried by the last voltage dropping if it was indeed caused by voltage spikes from the coils (reminder : I do have the Delphi shiny black ones).

This thread is my last hope for a fix before thinking of a DME replacement.

Will keep you updated.

[Jokeezy]

Hello everybody !

I’d like to thanks the guy who found out the coils issue !

My problem was solve after replacing the 6 coils and 6 sparks (I had 5 Delphi with black shiny top and one from another brand).

The feeling while driving now with new coils and sparks is huge it feels like a brand new car & no more issue.

A big thank you !