Click to go to Forum Home Click to go to maXbimmer Home

Go Back   maXbimmer Forums > maXimum Tech > 3 Series > E36 (1991 - 1999)
User Name
Password


Welcome to Maxbimmer.com!

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!

Reply
 
Thread Tools Rate Thread Display Modes
Old 09-04-2013, 02:45 AM   #16
South
3rd Gear Member
 
Join Date: Jun 2011
Location: Toronto
Posts: 328
This is the situation.

-late 95 325i with silver 413 DME
-swapped in 96 m52
-96 m52 converted sensors to obd1 and hooked up to original obd1 harness.

Questions

Why doesn't the car crank?

Any solutions that involve keeping current DME and its chip?

If I get a red label 413 DME what chip do I need?

I suck at electrics...
I just don't understand how the DME is acting up if all the connections on the m52 are obd1. Like how does the DME know the engine in it now is different? Pulling my hair out trying to wrap my head around this
South is offline   Reply With Quote
Old 09-04-2013, 08:23 AM   #17
sb_600
5th Gear Member
 
sb_600's Avatar
 
Join Date: Apr 2010
Location: Ottawa, ON
Posts: 1,155
You just need to remove the EWS from the code of the silver label 413 chip- it's not a huge deal- any bmw tuner should be able to do it. did Barrie get a hold of you?

That, or get a 413 red label DME and use the stock chip.
__________________
Shawn
1992 BMW 325i (CHUMPCAR #296 - build in progress)
1992 3.0L M52 325i (ex-daily driver - track car only)
2002 330Ci (ex-daily driver - sold!)
Check out my e36 track car build

Last edited by sb_600; 09-04-2013 at 11:13 AM.
sb_600 is offline   Reply With Quote
Old 09-04-2013, 08:23 AM   #18
sb_600
5th Gear Member
 
sb_600's Avatar
 
Join Date: Apr 2010
Location: Ottawa, ON
Posts: 1,155
I think it has to do with the ignition not matching the DME.
__________________
Shawn
1992 BMW 325i (CHUMPCAR #296 - build in progress)
1992 3.0L M52 325i (ex-daily driver - track car only)
2002 330Ci (ex-daily driver - sold!)
Check out my e36 track car build
sb_600 is offline   Reply With Quote
Old 09-04-2013, 11:03 AM   #19
cormier
6th Gear Member
 
cormier's Avatar
 
Join Date: Feb 2008
Location: Mississauga, ON
Posts: 1,552
As stated, you can remove the EMS from your current DME with a chip (I think there is also a wire snip process that works but don't quote me), or match the ignition with the donor car (PITA) to use your current DME. Or, you can get a red label 413 (they go for a fair bit of $$ now for this reason).

EWS prevents the motor from cranking at all and is probably your problem is you have a silver label and are unsure about the ews status.

Should be an easy fix!
__________________

cormier is offline   Reply With Quote
Old 09-04-2013, 11:18 AM   #20
ScotcH
6th Gear Member
 
Join Date: Dec 2003
Location: Ottawa, ON
Posts: 1,845
Quote:
Originally Posted by cormier View Post
As stated, you can remove the EMS from your current DME with a chip (I think there is also a wire snip process that works but don't quote me), or match the ignition with the donor car (PITA) to use your current DME. Or, you can get a red label 413 (they go for a fair bit of $$ now for this reason).

EWS prevents the motor from cranking at all and is probably your problem is you have a silver label and are unsure about the ews status.

Should be an easy fix!
Depends on the EWS ... the early ones will crank no problem, but won't fire.

If the car has not been changed, and all you did was swap in the engine and reused all the 325i sensors (including front mounted crank), there is no reason for it to not turn over. You missed a wire somewhere or something. Are you getting power to the Starter? Stupid question, but is the battery dead?

Some things to check:
- grounds, +12V wires, etc
- fuses, relays (could have blown during R&R)
- There is a fat black wire near the Diagnostic port, coming from the engine wiring harness ... it looks like ground. It's not, it's +12V and goes to the junction box (red wire under the black insulation). This powers the fuse box, so if you get it wrong, nothing will work.
- The 325 chip will run the car for sure, but it won't be optimized of course. You need a chip to take full advantage of the 2.8l
__________________
2007 BMW 328Xi Touring, 6 speed
ScotcH is offline   Reply With Quote
Old 09-04-2013, 11:20 AM   #21
ScotcH
6th Gear Member
 
Join Date: Dec 2003
Location: Ottawa, ON
Posts: 1,845
Quote:
Originally Posted by sb_600 View Post
I think it has to do with the ignition not matching the DME.
Wait ... is the guy using a different DME than what came in the car?? That will do it. The DME is coded to the EWS/key in the car.
__________________
2007 BMW 328Xi Touring, 6 speed
ScotcH is offline   Reply With Quote
Old 09-04-2013, 11:34 AM   #22
cormier
6th Gear Member
 
cormier's Avatar
 
Join Date: Feb 2008
Location: Mississauga, ON
Posts: 1,552
Quote:
Originally Posted by ScotcH View Post
Wait ... is the guy using a different DME than what came in the car?? That will do it. The DME is coded to the EWS/key in the car.
Wait that's a good point... Just re-read the OP

OP you're not using your old DME with the new motor?
__________________

cormier is offline   Reply With Quote
Old 09-04-2013, 11:59 AM   #23
sb_600
5th Gear Member
 
sb_600's Avatar
 
Join Date: Apr 2010
Location: Ottawa, ON
Posts: 1,155
haha oops - yeah South - please clarify if you're using the DME that came with the car...
__________________
Shawn
1992 BMW 325i (CHUMPCAR #296 - build in progress)
1992 3.0L M52 325i (ex-daily driver - track car only)
2002 330Ci (ex-daily driver - sold!)
Check out my e36 track car build
sb_600 is offline   Reply With Quote
Old 09-04-2013, 02:05 PM   #24
South
3rd Gear Member
 
Join Date: Jun 2011
Location: Toronto
Posts: 328
yeah using original DME. My concern is the car not cranking. I heard if it was just EWS then it would crank but not start? Im going to check if starter is getting proper voltage and all the grounds.
South is offline   Reply With Quote
Old 09-04-2013, 02:25 PM   #25
cormier
6th Gear Member
 
cormier's Avatar
 
Join Date: Feb 2008
Location: Mississauga, ON
Posts: 1,552
Hm ya if the DME and ignition in the car are both original...

Start checking your volts against the ETM for the motor -- see if the main relay is getting power, and then if that power is going to the fuel pump. With the ETM in front of you it will be a bit easier to identify the problem
__________________

cormier is offline   Reply With Quote
Old 09-05-2013, 01:38 AM   #26
South
3rd Gear Member
 
Join Date: Jun 2011
Location: Toronto
Posts: 328
Success. At least some progress.

I almost almost almost cut the green wire 7, to disable ews on my 1994/10 car. I checked the door for the manufacturing date.

Anyway before I cut it I was like eh - lets unplug everything except the starter and alternator wires. I also cleaned the surface of those wires. And voila, turned key and heard the starter crank the car for a second. Only a second since I didn't want the fuel pump pumping gas everywhere since everything is unplugged.

So either one of the plugs into the engine messed things up or cleaning the starter wires was all that was needed. I'll update as soon as I test each one.
South is offline   Reply With Quote
Old 09-20-2013, 07:42 PM   #27
South
3rd Gear Member
 
Join Date: Jun 2011
Location: Toronto
Posts: 328
car is running, no-crank and mixing up the fuel lines twice was pretty short sighted stuff to have to figure out to get it to start - now I can`t seem to align back up the exhaust flange to the exhaust manifold bolts so I think I bent my exhaust taking it off by a half inch. But it sounds like a devil Z without them. Neighbors already complained the one time I ripped it lol.
South is offline   Reply With Quote
Reply

Thread Tools
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

Forum Jump


All times are GMT -4. The time now is 10:54 AM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.