N54Tech.com - International Turbo Racing Discussion
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Deep_Blue Deep_Blue is offline
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Default DME: Dead Mother Effer... - 09-03-2013, 01:00 PM

Driving last night on the interstate and get SES light. Read codes...



...clear codes and move on

Drive a few more miles, go to pass at half throttle, and it happens.
  • SES light
  • Shudder, loss of power
  • Engine runs VERY rough, shakey
  • Pull over, read codes....







Car is now at my indy being looked at. It runs but just barely, feels like its going to stall at any second. Didnt drive it any more except to get on/off flatbed.

I've read all the DME threads/repair threads etc. Hoping my indy can fix the diode on the DME if it is just a diode. I'm just over 80k miles, so no emissions warranty work for me.

Any other advice from those of you who have dealt with this before?
  • Is there anything I can do if i have to get a new DME to make the car better? If i'm purchasing something anyways I'd like to get something out of it if possible.
  • Is there any evidence that mods lead to or accelerate DME failure? My guess is no since it happens on stock cars all the time.
  • If my indy cant fix, does anyone know a place in Atlanta that can fix? Or maybe a mail-in service?
  • If i have to replace the DME, i assume I'll lose the coding mods i have except for the Alpina TCU?

Mods: JB4 G5 ISO, BMS ***, VRSF 7" FMIC, Alpina B3 TCU Flash, cosmetic stuff
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Hierlevelz Hierlevelz is offline
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Default 09-03-2013, 01:18 PM

Pm member Roy Cormier over at E 90 Post. He repaired his DME successfully. I think he had several misfires as well.
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coolbho3k coolbho3k is offline
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Default 09-03-2013, 01:18 PM

I didn't know the DMEs just broke like that What model year is your car?

I really doubt the JB4 and TCU flash could have caused it.

Sounds simple but did you check your JB4 connections? What if one of the subconnectors came loose?


2007 E90 335xi 6AT Premium Pkg | JB4 G5 ISO | Cheap custom exhaust: OBX ********* ***, Secondary *** Delete w/ Magnaflow Xpipe | WedgePerformance Backend Flash ("PUMP") | DCI | BMS Cowl Filters | Alpina TCU Software | M3 flappy paddles retrofit | NGK "one step colder" Soon: custom oil cooler retrofit, VRSF 7" FMIC
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Deep_Blue Deep_Blue is offline
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Default 09-03-2013, 01:52 PM

Quote:
Originally Posted by coolbho3k
I didn't know the DMEs just broke like that What model year is your car?

I really doubt the JB4 and TCU flash could have caused it.

Sounds simple but did you check your JB4 connections? What if one of the subconnectors came loose?
its a 2007. I've had it for almost 3 years with no trouble but apparently the DMEs on these guys just go sometimes.

Good idea on checking the JB4 connections. I doubt thats it but worth a shot.

My indy says there is an open fuel injector recall on my car, so he's talking to BMW to see how to proceed with that.
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themyst themyst is offline
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Default 09-03-2013, 02:00 PM

I think there is an SIB for faulty DMEs in a certain production date range.


E90 LCI N54 6AT
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Pitch Black Pitch Black is offline
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Default 09-03-2013, 02:05 PM

So far, I have seen this with 07 335i's only. I wonder if its the first wave or just an 07 thing.


Current Ride: Still picking one
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Deep_Blue Deep_Blue is offline
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Default 09-03-2013, 03:01 PM

indy says theyre getting signal to all six injectors, but it comes and goes with fuel pressure. Maybe HPFP went? Weird if that threw a 30BA code.
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Darkcyd335xi Darkcyd335xi is offline
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Default 09-03-2013, 03:06 PM

Quote:
Originally Posted by Pitch Black
So far, I have seen this with 07 335i's only. I wonder if its the first wave or just an 07 thing.
"I think" it might be an MSD80 issue...thus the reason for the MSD81 update in the LCI's which is the '09+ N54 models.
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cn555ic cn555ic is offline
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Default 09-03-2013, 04:27 PM

Change out the injector MOSFET...Looks pretty simple to see which one is dead...Roy Cormier is the pioneer
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Hierlevelz Hierlevelz is offline
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Default 09-03-2013, 05:55 PM

Quote:
Originally Posted by cn555ic
Change out the injector MOSFET...Looks pretty simple to see which one is dead...Roy Cormier is the pioneer
I mentioned this to the OP after his original post and I guess it just went ignored.
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Deep_Blue Deep_Blue is offline
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Default 09-03-2013, 06:00 PM

Quote:
Originally Posted by Hierlevelz
I mentioned this to the OP after his original post and I guess it just went ignored.
Didnt go ignored. I sent Ray's thread to my indy before i posted this thread. Great stuff. I'm PMing him tonight
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Pitch Black Pitch Black is offline
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Default 09-03-2013, 08:56 PM

Its a simple but intimidating fix.


Current Ride: Still picking one
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Game's Avatar
Game Game is offline
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Default 08-19-2015, 10:59 PM

Bumping this up this tonight this basically happened to me. 07 as well.

Did the Roy Cormier solution fix your problem?

Last edited by Game; 08-19-2015 at 11:04 PM..
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wtfmarine wtfmarine is offline
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Default 08-19-2015, 11:40 PM

Basically. I posted about fixing this problem when it happened to me. I dropped my DME off with a friend who was use to soldering on things like our DME but for rockets and stuff like that. Anyways he had all 6 mosfets replaced in under an hour. Originally I took it to a computer/radio repair shop and several hours later they called telling me they couldnt figure out how to get the old ones off.


07 335i sleeper - PT5858 single turbo - stock exhaust - stock wheels
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Game's Avatar
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Default 08-20-2015, 12:46 AM

Quote:
Originally Posted by wtfmarine
Basically. I posted about fixing this problem when it happened to me. I dropped my DME off with a friend who was use to soldering on things like our DME but for rockets and stuff like that. Anyways he had all 6 mosfets replaced in under an hour. Originally I took it to a computer/radio repair shop and several hours later they called telling me they couldnt figure out how to get the old ones off.
Ahh alright thanks. Hoping I can find someone on E90post that's willing to do it without costing an arm and a leg.
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Dmac @ BMS/DMD Dmac @ BMS/DMD is offline
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Default 08-20-2015, 01:29 AM

My buddy had the same issue. I replaced the mosfets for him and it was back to 100%. If you were local, I'd fix it for you.


2008 135i 4L80E Swap - 807 WHP
VM 6466 Single Turbo Kit | JB4 | BMS Flash via MHD | Fuel-It Stage 3 | BMS Port Injection | E85


For all JB4 Mobile/Connect Kit requests, email me at: support@jb4connectkit.com

For JB4 Mobile feedback (bug reports, minor annoyances, etc.), email me at: feedback@jb4connectkit.com
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Game Game is offline
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Default 08-20-2015, 01:31 AM

Quote:
Originally Posted by Dmac @ BMS/DMD
My buddy had the same issue. I replaced the mosfets for him and it was back to 100%. If you were local, I'd fix it for you.
PM'd.
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duracell8 duracell8 is offline
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Default 08-20-2015, 05:10 AM

DME's are covered under federal 8/80 warranty incase anyone was under on mileage.



2008 535i RB Turbos, ER Charge pipe, Tial BOV, 2.3 gal BMS Meth 75/25, Dual nozzle CM10 and CM7, BMS Race Flash, 3" Down Pipe, JB4 ISO G5, N20 Map Sensor, BMS OCC, BMS PCV Valve, JB4 Mobile App, 12.3 @ 116 mph
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dlp3719 dlp3719 is offline
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Default This happened to me - 08-20-2015, 08:12 AM

My 2007 MSD80 DME died. I was at 83k miles and BMW wouldn't cover under emissions warranty.

I ordered the 6 resistors and took it to a TV repair shop. They took the old ones off and soldered on the new. TV repair shop charged $35. All in was <$50. Most expensive part was a rental car for a week.

This was 20k miles ago and no issues since.

I bought the resistors from Digi-Key. www.digi-key.com. Part #FDB14N30TMCT-ND

http://www.digikey.com/product-searc...DB14N30TMCT-ND

You need 6 but I got 7 in case repair guy botched one. $1.37/each


Oh snap... Just noticed you are in Atlanta. I used Rapid TV Repair in Marietta right by Dobbins Air Force Base - 678-439-9637. It took maybe 15 minutes when I went by. Can not recommend him enough.


2007 n54 e90 sedan (1/07 date), JB4 G5 ISO - Map 3, BMS DCI, BMS Trunk Tank Meth Kit - two nozzle - CM7/CM10, BMS OCC, MHD Trebilia Flash, e60 (5 gallons of 93 and 11 gallons E85), Stage 2 from Fuel-It, VRSF 7" FMIC, N54tuning.com V1 DP, ER Charge Pipe w/Tial BOV, NGK Iridium (one-step colder) plugs, N20 TMAP Sensor, RB turbo inlets, VTT outlets
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Game's Avatar
Game Game is offline
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Default 08-21-2015, 12:29 AM

Quote:
Originally Posted by dlp3719
My 2007 MSD80 DME died. I was at 83k miles and BMW wouldn't cover under emissions warranty.

I ordered the 6 resistors and took it to a TV repair shop. They took the old ones off and soldered on the new. TV repair shop charged $35. All in was <$50. Most expensive part was a rental car for a week.

This was 20k miles ago and no issues since.

I bought the resistors from Digi-Key. www.digi-key.com. Part #FDB14N30TMCT-ND

http://www.digikey.com/product-searc...DB14N30TMCT-ND

You need 6 but I got 7 in case repair guy botched one. $1.37/each


Oh snap... Just noticed you are in Atlanta. I used Rapid TV Repair in Marietta right by Dobbins Air Force Base - 678-439-9637. It took maybe 15 minutes when I went by. Can not recommend him enough.
Going to call up some shops tomorrow. Hope I have some luck.
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CLTEURO CLTEURO is offline
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Default 08-21-2015, 08:32 AM

I paid an engineering student at my local university $20 to solder them on. :D


2008 E92 335i Coupe 6MT | Apex Arc-8 18x9.5 | MHD: Stage 2 93oct | CP-e Charge Pipe | Active Autowerke BOV | DCI | VRSF C*****S D*******S | VRSF 5" FMIC | Cyba Air Scoops | BMW PE Mod
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