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So, I am working on a colleague's 12/1994 525i and the EWS is missing. A red label '413' DME would allow me to bypass the EWS altogether????
In short, yes. If the ews system is missing, you need to get an ecu that does not look for an ews key. The red label dme would be the one :

http://www.ebay.com/itm/93-94-95-BM.../251178002463?pt=Motors_Car_Truck_Parts_Accessories&hash=item3a7b60281f&vxp=mtr

Please read the product description for more details. If in doubt, write the seller and request confirmation....they don't always include much details.

This ecu is too expensive, imo. $50-$60 should be the right price. If I were you and had time, I'd keep looking....

rgds,
Roberto
 
Thanks, it's a colleague's car and it's just an extra car for him, so time is not a crucial element...
This is a good alternative to getting a new ecu :

http://www.ebay.com/itm/BMW-E36-325.../150954878892?pt=Motors_Car_Truck_Parts_Accessories&hash=item23259ca7ac&vxp=mtr

You can transplant this into the existing ecu and provided the ecu is not itself damaged, it will work fine.

The chip not only has the EWS2 references removed from it, it has a performance tune as well. Thus, you turn a repair into an upgrade, which is always a good thing to do where possible.

You will need something like that to get your silver lable dme to work at all, if not you can't even use it as a spare even if it is undamaged.

These are alternatives :

http://www.ebay.com/itm/93-94-BMW-E.../130766328398?pt=Motors_Car_Truck_Parts_Accessories&hash=item1e7247d24e&vxp=mtr

http://www.ebay.com/itm/Racing-Chip.../390497561887?pt=Motors_Car_Truck_Parts_Accessories&hash=item5aeb77ed1f&vxp=mtr

However, those two do not have proper descriptions. Please write to the sellers directly to confirm if the ews 2 system is deleted from the chip, before you confirm the purchase.

You can always purchase a red label dme AND a performance chip, if the current dme is damaged, or if you want a performance dme and also a backup ecu. IMO its worth investing money in it, and can always be sold off later for the same price if your friend decides to sell off his car.

rgds,
Roberto
 
If there is no crank, it cannot be a fuel, spark or crankshaft sensor issue. Those would only cause a no-start situation. In fact, it cannot even be a bad dme. That would cause a no spark issue too, but the cranking would work as long as the battery has juice. However, if the EWS system is defective, the battery is dead, or the battery's fusible link is damaged, or of course your starter is busted (pretty rare) you won't get a crank at all.
Hello Mr. Roberto!!

I'm back :) My progress has not been progressed since our last conversation. You mention the batterys fusible link, could this be my problem.

To recap:
I bought a new siver DME from Bavarian for my car, no change
My car cranks, gets spark, will not start.
Is it possible that I need a crank case sensor?
 
Hello Mr. Roberto!!

I'm back :) My progress has not been progressed since our last conversation. You mention the batterys fusible link, could this be my problem.

To recap:
I bought a new siver DME from Bavarian for my car, no change
My car cranks, gets spark, will not start.
Is it possible that I need a crank case sensor?
Hello Taylor,

Oddly enough, I was just thinking about you like less than 24 hours ago.

A silver DME will not work if your car's problem is the EW2. You must read through the first post in this thread, as well as the interlinked website in that post, very carefully.

To recap.

How EWS2 works.

1. There is a device called an immobiliser system on the car. This is separate from the ECU. Lets call this EWS2.
2. On cars with EWS2, the ecu is trained to expect authentication from the EWS2, before proceeding to start the car. This authentication is generated when the correct key is inserted into the ignition of an ews2 equipped car, with a working ews2 system.
3. IF the EWS2 system itself is busted, it will not send the authentication signal to the ecu even if the correct key is used. The ecu will not start the car.
4. The ews2 delete procedure thus cannot stop at merely bypassing the EWS2 system. We have to do something to the Ecu itself as well. It is thus, a 2 stage fix.
5. After the EWS2 system is bypassed, you need to EITHER swop your ecu with a red-label m50 vanos ecu (these ecus came WITHOUT the need for ews authentication, and are identical to the later cars in all other respects), OR you need to purchase an EWS DELETE chip from ebay and swop out the existing chip on your CURRENT SILVER label ecu.

6. Buying an ews delete chip is my personal favourite as these chips also come with boosted fuel/air maps (doublecheck with the seller before making the purchase). Therefore you turn an expensive repair into an upgrade as well, which is nice even if it cost a little more money and time.

So, not only will you delete the ecu's ews authentication function, you will boost your car's performance. Remember, the car was built in an era to function normally for the worst standard fuel of the day. Such low grade fuel is no longer common, and so the gas that is one grade up can truly take advantage of the new fuel/air map in your delete chip. Such chips usually require you to use fuel with higher octane numbers than the stock chips were designed for. Our car did not come with octane rating detectors stock and so the stock ecus do not have multiple maps available for it to switch depending on which type of gas is being used.

Please read the first post very slowly.

If you can't get a full refund for your the silver dme that you just purchased, or you can't exchange it for free with a red label dme SPECIFIC TO YOUR ENGINE (just remembered that you're not running a 525), then try to find an ews2 delete chip with boosted maps on ebay. They go for something like $40 shipped. You need to do alot of googling, alot of calling up shops, and it would probably work better if you brought this situation to the correct forum for your car as people would be able to direct you to places quickly.

rgds,
Roberto
 
Discussion starter · #226 ·
Hello Mr. Roberto!!

I'm back :) My progress has not been progressed since our last conversation. You mention the batterys fusible link, could this be my problem.

To recap:
I bought a new siver DME from Bavarian for my car, no change
My car cranks, gets spark, will not start.
Is it possible that I need a crank case sensor?
Let me throw my hat in the ring here. Have you performed the stomp test to check for any fault codes? If not, you need to do so. How did you confirm you have spark? If you do indeed have spark, then it is highly unlikely to be the CPS (if not darn near impossible) or DME.

If you have spark and it will crank over, then you have a fuel delivery problem. Check in this order (easiest/cheapest to most difficult/most expensive):

Fuel pump fuse
Fuel pump relay
fuel filter
fuel pump
fuel pump regulator

One quick easy way to help rule out electrical problems and rule in a fuel delivery problem is to squirt some starting fluid into the air box (about 2-3 seconds) and then try to crank the car. It is preferable to squirt the starting fluid in at the same time that someone is trying to crank the car. This, of course, takes two people.

If the car fires up, then you have confirmed that it is a fuel delivery issue. However, once you get it to crank, don't keep running it on the starting fluid. It is very hard on the engine. If it does crank, then check the above and reference the Bentely manual on how to troubleshoot the fuel system.

Hope this helps some.
 
Steve, perhaps you could consider ammending your thread's title from " EWS Delete / Bypass and no-start problem finally solved - VERY LONG read " to " EWS Delete / Bypass 2-STAGE fix and no-start problem finally solved - VERY LONG read ' or "2-STAGE EWS Delete / Bypass and no-start problem finally solved - VERY LONG read" or something like that, to further suppress the possibility of confusion especially among noobs already stressed out by a problem. This is relevant considering that it is one of the most widely googled threads on the fest, despite not being a sticky.


rgds,
Roberto
 
Hello Mr. Roberto!!

I'm back :) My progress has not been progressed since our last conversation. You mention the batterys fusible link, could this be my problem.

To recap:
I bought a new siver DME from Bavarian for my car, no change
My car cranks, gets spark, will not start.
Is it possible that I need a crank case sensor?
If your car gets spark, then your cps (crankshaft position sensor) is working fine. If it cranks, that means your fusible link, battery and starter is also working fine. Actually, if you are getting spark, that means your EWS system is not the problem here. The ecu will not initiate spark signals to the coils unless it is authenticated or unless it does not require an EWS authentication to begin with (the ews delete referred to in this thread).

I assume you have ruled out fuel delivery as a problem, and I am assuming that your fuel filter is in good shape. Most E34 owners who intend to keep their car will change out the fuel pump and the fuel pump's relay. BMW did not make these devices to last 15-20 years without issues, and when they die, they usually do so without warning, and you have a no start issue. The two devices mentioned here will cost you under $150 shipped together for OEM stuff (only buy OEM for these)....prices have really come down over the years. Labour is 0 for swopping out the fuel relay and takes between 30-60 minutes for a professional, when it comes to your fuel pump itself.

Please google and download the Bentley manual relevant to your car. I've attached the troubleshooting tables from mine here, they are largely cross-model affairs, but you should still get your own manual. And you must definitely take this matter to the right forums for a speedy focused resolution.
 

Attachments

Discussion starter · #229 ·
Steve, perhaps you could consider ammending your thread's title from " EWS Delete / Bypass and no-start problem finally solved - VERY LONG read " to " EWS Delete / Bypass 2-STAGE fix and no-start problem finally solved - VERY LONG read ' or "2-STAGE EWS Delete / Bypass and no-start problem finally solved - VERY LONG read" or something like that, to further suppress the possibility of confusion especially among noobs already stressed out by a problem. This is relevant considering that it is one of the most widely googled threads on the fest, despite not being a sticky.

rgds,
Roberto
It is already confusing enough. I'm going to leave it as it is.
 
Thanks for all the insight, looks like I need to hit the repair manual again.
Just a reminder that I have a silver dme stock on a 4cyl car built in March of 95. I sure wish I had gotten the V6 seems a little bit easier to deal with lol...

Again thanks for taking all the time to share your knowledge :)
 
:thumbup:I had some help tonight so I went out to tackle the BMW once more.

Please allow me to recap.
I have a 4cly E36 made in March of 1995 with 10K miles, my symptoms started with a intermit starting to a complete "no crank" and yes I had dash lights, windows work, headlights work and taillights work.

So I:
Had a new key made at BMW- (still no crank)
Did EWSII bypass as instructed (THE CAR WILL Crank!!) but no start
Tested CPS and passed at 1.25 ohms across pins 1 and 2
Bypassed clutch by combining the blue and brown wires together.
Bought a known good DME from Bavarian (silver) as a manufacture replacement
Bought a new Optima Yellow top battery
Made jumper for fuel pump relay and confirmed pressure
Removed resistor ring from around key hole

Ok, so after all this I still have confirmed no spark while car is cranking.
I have good battery power, I can hear a clicking as when I turn over the key. I don't think the fuel pump is engaging to pump on attempted start-up. Which leads me to believe its still a EWS II issue but I'm all out of ideas

Ideas?
Thought about testing the relay to the DME but not sure of ohm values.
Also this car will NOT provide me with any codes doing the stomp test.

Thanks to everyone that has any input
 
Ok, this is how it works.

The EWS system communicates with the EWS component of your ECU/ DME's programming. The EWS is the 1st gatekeeper and the DME is the second gatekeeper.

When the EWS system itself is busted, the signal from the ignition key does not even reach the rest of the car, hence your engine will not even turn over.

Bypassing the EWS system allows your ignition signal to reach the starter and cause the engine to crank.

However, no EWS signal reaches the DME to pair up with its internal programming. Hence the ECU will assume that the security verification is not complete and not take further action. Therefore, the car will crank but will not fire up. Unclamp the ECU and you'll see that the car still cranks but still does not start....same thing essentially.

You need to bypass BOTH gatekeepers to get this running. Your current DME is still looking for the EWS. You gotta stop that as well.

What you need, is an EWS delete chip on your ecu. This is a aftermarket chip that's coded for your car, but without the EWS subroutines. So you may have purchased an extra DME, but unless it has this ews delete chip installed on it, or its an older dme (91.92, etc, generally known as a red label dme) which did not have an EWS pairing function to begin with, your car will still not fire up even though the initial culprit, your first gatekeeper, the primary EWS system itself, has been disabled.

If all of this is news to you, then you have read through Steve's first post too quickly. Please re-read the very first post on this thread again for further details beyond this point.

rgds,
Roberto

p.s. EWS delete chips retail for around $50 on ebay). You can probably plug that into your original ecu (the chips come with installation instructions) or your new spare ecu. Or you can sell off your new spare ecu and purchase an older red label dme instead. I would suggest the ews delete chip because it usually contains an enhanced map which will improve your car's performance itself, so you'll turn a repair into an upgrade.
Roberto,

Its possible that my DME is still looking for the EWS, since no chips are avaible for the 4cyl what are my options?
Possible EWS II emulator?
 
Hi dude ! 10k miles indeed! Unbelievable. Yes, your dme is still looking for it. Secondly, i read through your update above and your ohm readings...wait i think you meant to say 1250 ohms and not 1.25ohms. Is this the right reading for your engibe ? Check the bentley manual abd google. For us it would be the right reading for the caM sensor.

As to your delete chip issues, you will either need to fix the ews2 system properly and use your existing ecu or go to the dealer for help.

PLEASE POST IN THE E36 FORUMS FOR CHEAPER HELP WITH YOUR ECU. Post worldwide if you need to, our e36 forums are not always responsive according to my buddy.
 
You mentioned in an earlier post:

You absolutely have to check your CPS. Remember, it should read 540 ohms +/- 10%. If the CPS is out of specs

Yes mine is at 1250 or 1.25 depending on settings of the meter, I have a Hayes Book and its within those specs for a M42 engine...should it need to be at 540?

The sensor I checked is on the front of the engine of a 4cly near the oil filter. You have to remove the upper intake to get to the wire connector real pain to get to.
 
Discussion starter · #236 · (Edited)
:thumbup:I had some help tonight so I went out to tackle the BMW once more.

Please allow me to recap.
I have a 4cly E36 made in March of 1995 with 10K miles, my symptoms started with a intermit starting to a complete "no crank" and yes I had dash lights, windows work, headlights work and taillights work.

So I:
Had a new key made at BMW- (still no crank)
Did EWSII bypass as instructed (THE CAR WILL Crank!!) but no start
Tested CPS and passed at 1.25 ohms across pins 1 and 2
Bypassed clutch by combining the blue and brown wires together.
Bought a known good DME from Bavarian (silver) as a manufacture replacement
Bought a new Optima Yellow top battery
Made jumper for fuel pump relay and confirmed pressure
Removed resistor ring from around key hole

Ok, so after all this I still have confirmed no spark while car is cranking.
I have good battery power, I can hear a clicking as when I turn over the key. I don't think the fuel pump is engaging to pump on attempted start-up. Which leads me to believe its still a EWS II issue but I'm all out of ideas

Ideas?
Thought about testing the relay to the DME but not sure of ohm values.
Also this car will NOT provide me with any codes doing the stomp test.

Thanks to everyone that has any input
Have you checked your coil and have you checked your main relay? Unfortunately, it still sounds like an EWS issue, but perhaps the coil or main relay are the problem.
 
Discussion starter · #238 ·
Nice find! I bought it.....

Thanks for all your help guys!!!!
Good luck with it. I have never seen where the EWS II bypass procedure has been done on a 318. If it works, you may well be the first. I hope it works for you.
 
Have you checked your coil and have you checked your main relay? Unfortunately, it still sounds like an EWS issue, but perhaps the coil or main relay are the problem.
No I haven't my electrical checking skills are very low. I'm more of a mechanical tech, although I do follow instructions quiet well :)

If what Roberto says is a fact the car will never start as long as I have not bypassed the EWS within the DME and since there are no mods available for the 4 banger kinda in a tough spot.

Im pretty excited to see if the 94 red label 4cyl no ews dme will work. I may have it by the end of the week..... booo yaaaa:D
 
Discussion starter · #240 · (Edited)
No I haven't my electrical checking skills are very low. I'm more of a mechanical tech, although I do follow instructions quiet well :)

If what Roberto says is a fact the car will never start as long as I have not bypassed the EWS within the DME and since there are no mods available for the 4 banger kinda in a tough spot.

Im pretty excited to see if the 94 red label 4cyl no ews dme will work. I may have it by the end of the week..... booo yaaaa:D
I would still take a look at them while you are waiting on the DME. The checks are outlined in Bentley.

Fingers crossed for ya :thumbup:
 
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