E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 07-03-2014, 11:26 PM   #1
Pole position
Registered User
 
Join Date: Dec 2012
Location: LI,NY/Athens,Ohio
Posts: 204
My Ride: E46 330ci
Ecu issues need help asap

Help me please. I sent out my ecu to OE tuning and now it won't idle or have any power whatsoever. When I uninstalled it I unplugged the battery then removed the ecu. So when I got it back I installed it then reattached my battery. The car won't idle and has so little power I can't make it up my driveway. I need this car running for work. What could I have done wrong? Could oe tuning have given me the wrong tune? I don't know why to do, maybe the batt voltage is too low from sitting a week? I'm lost.


Sent from BimmerApp mobile app
__________________
Shut up and drive

Last edited by Pole position; 07-03-2014 at 11:27 PM.
Pole position is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 07-03-2014, 11:48 PM   #2
Rob43
Hates Low RPM !
 
Rob43's Avatar
 
Join Date: Oct 2009
Location: Richmond VA
Posts: 3,965
My Ride: 03 331Ci 5spd R1200R
Quote:
Originally Posted by Pole position View Post
Help me please. I sent out my ecu to OE tuning and now it won't idle or have any power whatsoever. When I uninstalled it I unplugged the battery then removed the ecu. So when I got it back I installed it then reattached my battery. The car won't idle and has so little power I can't make it up my driveway. I need this car running for work. What could I have done wrong? Could oe tuning have given me the wrong tune? I don't know why to do, maybe the batt voltage is too low from sitting a week? I'm lost.


Sent from BimmerApp mobile app
The chances of a quick fix are low, get EO* Tuning on the phone ASAP, but most likely you'll be sending your ECU back out to them for a hopeful fix. You could take it to the dealer on Monday & have them flash over that non working tune with the latest BMW update for your car, but you'd be back to square one. This is probably a bad time to bring up the Shark Injector,.....so I won't.


Good luck,
Rob43








* Yeah, I did that on purpose.
__________________



Rob #43 ITS/ITR/STU, BMW 325I, STU LAP RECORD
SUMMIT POINT WV 1:24:229 S.C.C.A.
(DynoDynamics https:vimeo.com/8486878 Dyno Video)
"Chance Favors The Prepared Mind"

Need Help With Your Nitrous Ambitions ?.....PM ME
Quote:
Originally Posted by RacerX View Post
Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
Rob43 is online now   Reply With Quote
Old 07-04-2014, 10:08 AM   #3
Pole position
Registered User
 
Join Date: Dec 2012
Location: LI,NY/Athens,Ohio
Posts: 204
My Ride: E46 330ci
Damn. Nothing I can try resetting or anything I could have done wrong?


Sent from BimmerApp mobile app
__________________
Shut up and drive
Pole position is offline   Reply With Quote
Old 07-04-2014, 11:04 AM   #4
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,929
My Ride: '06 330CiC, '03 M5
Disconnect the battery and disconnect and reconnect the DME connectors. Maybe you did not fully seat a connector?

Most tunes do not alter anything with idle, the only things that can be changed on most engines are fuel and ignition timing maps, on these cars they may be able to tweak VANOS a bit??

There are some problems when flashing a DME that the file becomes corrupt and when the car is not there to test, then it is really hard to determine the DME flash was done properly.

Good luck.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
jfoj is online now   Reply With Quote
Old 07-04-2014, 11:20 AM   #5
Pole position
Registered User
 
Join Date: Dec 2012
Location: LI,NY/Athens,Ohio
Posts: 204
My Ride: E46 330ci
Ecu issues need help asap

If I keep the engine running the eml light comes on. What could this mean.
Just noticed after I rep lugged the ecu, not sure if it was on before.

Sent from BimmerApp mobile app
__________________
Shut up and drive

Last edited by Pole position; 07-04-2014 at 11:26 AM.
Pole position is offline   Reply With Quote
Old 07-04-2014, 11:44 AM   #6
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,929
My Ride: '06 330CiC, '03 M5
Did you do ANYTHING else to the car while the DME was out of the car?

I/others probably assume all you did was remove the DME and ship it for flashing, but did you leave the car untouched while waiting on the DME to return?

Details are critical here.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
jfoj is online now   Reply With Quote
Old 07-04-2014, 11:51 AM   #7
sunnyjay
Registered User
 
Join Date: Nov 2011
Location: USA
Posts: 189
My Ride: 01 330i
Is it possible he might need to reset his adaptations?
sunnyjay is offline   Reply With Quote
Old 07-04-2014, 11:54 AM   #8
Pole position
Registered User
 
Join Date: Dec 2012
Location: LI,NY/Athens,Ohio
Posts: 204
My Ride: E46 330ci
Ecu issues need help asap

Literally the car was running fine as it always has, as I am completely up to date with maintenance, so I parked it, unplugged battery, waited a bit, then removed the ecu and shipped it. The car was not touched for a week, battery left unplugged, I plugged in the ecu when it came back, plugged in battery, then it ran like ****. Since then I have undone the battery and replugged the ecu twice.

So yes, nothing was touched while the ecu/dme was away.


Sent from BimmerApp mobile app
__________________
Shut up and drive

Last edited by Pole position; 07-04-2014 at 11:56 AM.
Pole position is offline   Reply With Quote
Old 07-04-2014, 11:56 AM   #9
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,929
My Ride: '06 330CiC, '03 M5
Adaptions are really a highly misunderstood situation. Adaptations are always adapting/changing and will adjust as needed on their own.

The only real reason to clear adaptation is when working on an engine and replacing/adjusting something to then see if the replacement/adjustment had any specific and immediate change to the engine performance.

Otherwise continue to drive and the adaptions will change on their own over a week or so of driving.

I am just hesitant to think that a Fanatic/DIY or person that wants to "tune" their DME would let a car sit untouched while waiting on the DME to return. I have to assume throttle body cleaning or something was done in the interim??
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
jfoj is online now   Reply With Quote
Old 07-04-2014, 11:58 AM   #10
Pole position
Registered User
 
Join Date: Dec 2012
Location: LI,NY/Athens,Ohio
Posts: 204
My Ride: E46 330ci
Ecu issues need help asap

No I cleaned the tbody and icv a few months ago. I also was away working in the city while my car was stationary waiting for the ecu so nothing was touched. Your right though, I usually try to do a bunch of things at once, but not this time.

And should/how I reset adaptations?


Sent from BimmerApp mobile app
__________________
Shut up and drive

Last edited by Pole position; 07-04-2014 at 12:00 PM.
Pole position is offline   Reply With Quote
Old 07-04-2014, 12:12 PM   #11
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,929
My Ride: '06 330CiC, '03 M5
Forget about the adaptations.

This probably occurs when the DME is flashed anyway and adaptions have very little to do with idle. They are small, sort term adjustments to fuel trims and ignition timing. They do not usually have the ability to make a car undriveable, just slight performance differences.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
jfoj is online now   Reply With Quote
Old 07-04-2014, 12:14 PM   #12
Pole position
Registered User
 
Join Date: Dec 2012
Location: LI,NY/Athens,Ohio
Posts: 204
My Ride: E46 330ci
Ok. So what's next


Sent from BimmerApp mobile app
__________________
Shut up and drive
Pole position is offline   Reply With Quote
Old 07-04-2014, 12:27 PM   #13
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,929
My Ride: '06 330CiC, '03 M5
EML usually means something is wrong with the drive by wire/electronic throttle body.

You might just for fun make sure the battery Voltage is good.

See 4th link in my signature for the Hidden OBC Menu if you do not own a Voltmeter. You can display Voltage directly on the dash OBC display.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
jfoj is online now   Reply With Quote
Old 07-04-2014, 12:36 PM   #14
Pole position
Registered User
 
Join Date: Dec 2012
Location: LI,NY/Athens,Ohio
Posts: 204
My Ride: E46 330ci
Ecu issues need help asap

Ok will do. What is the min voltage I should be looking for?
Edit- I am at 12.25

Sent from BimmerApp mobile app
__________________
Shut up and drive

Last edited by Pole position; 07-04-2014 at 12:39 PM.
Pole position is offline   Reply With Quote
Old 07-04-2014, 02:16 PM   #15
Pole position
Registered User
 
Join Date: Dec 2012
Location: LI,NY/Athens,Ohio
Posts: 204
My Ride: E46 330ci
It's mostly charged and still doesn't work. Could they have loaded an m3 tune or something into it by accident?


Sent from BimmerApp mobile app
__________________
Shut up and drive
Pole position is offline   Reply With Quote
Old 07-04-2014, 02:24 PM   #16
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,929
My Ride: '06 330CiC, '03 M5
Quote:
Originally Posted by Pole position View Post
Ok will do. What is the min voltage I should be looking for?
Edit- I am at 12.25
That's a bit low, but should be good enough. 12.6V it a fully charged battery. 12.25 from the OBC means the battery is likely 12.4V at the terminals?

FYI, 12.2V is a battery with only 50% charge, but again, the OBC usually reads a bit low due to in car wiring Voltage drop.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299

Last edited by jfoj; 07-04-2014 at 02:25 PM.
jfoj is online now   Reply With Quote
Old 07-04-2014, 02:29 PM   #17
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,929
My Ride: '06 330CiC, '03 M5
Quote:
Originally Posted by Pole position View Post
It's mostly charged and still doesn't work. Could they have loaded an m3 tune or something into it by accident?
M3 tune would be unlikely. Most tuners extract the DME load in the DME, the tweak the fuel, ignition and maybe VANOS blocks, then reload what they extracted.

But this being said, I also think someone cold tweak and load the wrong file.

How many bad cut and paste jobs have you done in the past?

About the only other thing is to remove the throttle connection, I recall it is a twist connector, then reconnect in case it somehow was not fully seated and the time the car say the connector worked loose?
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
jfoj is online now   Reply With Quote
Old 07-04-2014, 02:30 PM   #18
Pole position
Registered User
 
Join Date: Dec 2012
Location: LI,NY/Athens,Ohio
Posts: 204
My Ride: E46 330ci
Yeah it's up to 80% via the charger readout and 12.5 on the terminals per my gauge. This doesn't seem to be the problem. What else could be wonky, blown fuses somewhere? On a weird note my driver side window isn't going up and down when I open the car door. It just stays down, is this a hint to something else?


Sent from BimmerApp mobile app
__________________
Shut up and drive
Pole position is offline   Reply With Quote
Old 07-04-2014, 02:33 PM   #19
Pole position
Registered User
 
Join Date: Dec 2012
Location: LI,NY/Athens,Ohio
Posts: 204
My Ride: E46 330ci
Quote:
Originally Posted by jfoj View Post
M3 tune would be unlikely. Most tuners extract the DME load in the DME, the tweak the fuel, ignition and maybe VANOS blocks, then reload what they extracted.



But this being said, I also think someone cold tweak and load the wrong file.



How many bad cut and paste jobs have you done in the past?



About the only other thing is to remove the throttle connection, I recall it is a twist connector, then reconnect in case it somehow was not fully seated and the time the car say the connector worked loose?


What do you mean by cut and paste? I have never messed with the electronic systems on this car. It is set up well with headers, drop in air filter, konis, eibachs, vanos seals, Disa valve, cooling system, and all new bushing but has never been messed with electronically.



Sent from BimmerApp mobile app
__________________
Shut up and drive
Pole position is offline   Reply With Quote
Old 07-04-2014, 02:58 PM   #20
Pole position
Registered User
 
Join Date: Dec 2012
Location: LI,NY/Athens,Ohio
Posts: 204
My Ride: E46 330ci
Nevermind about the window thing it just wasn't up all the way...woops


Sent from BimmerApp mobile app
__________________
Shut up and drive
Pole position is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 08:39 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use