E36 M3 3.0 Wont start!! Suspected DME... advice needed please - Page 3

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Thread: E36 M3 3.0 Wont start!! Suspected DME... advice needed please

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    #21
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    It will be done for performance, and also removing the final part of EWS, I assume.
     
     

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    #22
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    Quote Originally Posted by TheEnd View Post
    It will be done for performance, and also removing the final part of EWS, I assume.
    I see so the coding for the ews would normally be in that chip? Or to put it another way when you chip an E36 ecu do you have to also bypass the ews?

    Thanks for all the help by the way
     
     

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    #23
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    yep, the code is in the chip.
    When they are chipped, there is two options, either bypass it, or use the original unique serial number in the chip.
     
     

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    ArcEye (16-09-2011)

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    #24
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    Right I bit the bullet and ordered another ECU and it has arrived this morning! Its EWS 2 type (half the price of a non ews type)
    complete with key transponder, key inductance coil, and ews 2 module, plus another black box...is this the vanos controller? does it need swapping?

    END how much for you to do an EWS delete chip to my new ECU? If it works It may become another production race car so having the EWS and alarm disabled would be a must!

    Apart from having the battery disconnected, anything else I should be aware off before fitting this lot. Does the inductance coil need changing? I thought that was universal...

    Ill probably swap it all over just in case...Fingers crossed!
     
     

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    #25
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    I would swap everything over first and see what happens.
    That should let you know what part has the problem.

    What you need to swap is the ECU, the EWS box, and the key chip.

    You can leave the EWS ring and the VNC vanos controller
     
     

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    ArcEye (16-09-2011)

  9. Problem fixed :d she lives!! 
    #26
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    Well I just swapped the ECU, EWS unit and key transponder....What a result! She started up first turn of the key, and held a steady idle speed! (never idled that well previously or started so reliably)

    I think it took a while for the ECU to 'settle in' possibly, once the engine was warm I gave it some revs and felt quite a bit of engine vibration coming through the car.

    Once I'd put everything back together, including reverting back to original crank position sensor (in case this was the cause of the vibes) I tried again. This time no vibration, or definitely less noticeable. Group N gearbox mounts don't help though!

    I doubt it was the crank position sensor as the other was the same part number and was original BMW too. Possibly just the ECU learing the new engine its connected to?

    So just in case someone has the same problem, I am pretty sure the only part that failed was the ECU. Its weird because it seemed to degenerate over time (the car wasn't be driven much tbf). It became harder and harder to start and then impossible. It also would start and not idle and then cut out.

    This could all be due to the fact it was a modified ECU with a performance chip ( see pic) the is origin of this chip is unknown. The owner is now happy its back the way BMW intended...now with a fullyworking EWS system

    Many thanks for everyone's help, particularly END, I owe you a drink mate!
     
     

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    #27
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    If you have the time, try the other chip in your ECU.
    If it works, it has an EWS bypass built in, and it might be something interesting considering they went to the effort of encrypting it.
     
     

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