1994 E36 320i Auto, ECU,DME advice needed - Page 4

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Thread: 1994 E36 320i Auto, ECU,DME advice needed

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  1.  
    #31
    Lez
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    Quote Originally Posted by Lez View Post
    Thanks for doing all of that research for me Ronnie

    I am now totally convinced that you are right and I'm not going to read anymore of these websites that claim other things

    I'm going to take my DME apart again and using a magnifying glass, try to find out what is wrong with it. I put the car back on the diagnostics with the engine running and it came up with fault 75 indicating that there was no voltage going to the Lambda sensor. It says to check pin 73 on the DME to see if there is 5 volts coming from it. It also says that lines to the sensor could be at fault or the sensor is faulty, but I've just renewed the sensor.

    Once again, thanks for all your help over the last couple of weeks Ronnie
    I took the DME apart again and one of the PCB's is toast
    I was lucky enough to find a replacement on eBay for £50 with free p&p
    http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=320324395606

    It's the exact same DME, so will I have to swap over the chip from my old DME for it to work on my car?
     
     

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  3.  
    #32
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    I sorted out fault 75. Turned out that I had wired the new Lambda sensor wrong, thanks to yet another website giving the wrong information

    If anyone is going to buy one of the universal lambda sensors that you fit the plug off your old sensor too, then here is the correct way to wire it

    There are 4 wires on the plug, coloured: red, white, black and yellow.
    There are 4 wires on the universal sensor coloured: black, grey & 2 x white.

    RED to WHITE = HEATER
    WHITE to WHITE = HEATER
    BLACK to GREY = SIGNAL - (or EARTH)
    YELLOW to BLACK = SIGNAL +

    NOTE:- Either of the 2 WHITE wires on the sensor can go on the RED or WHITE plug wires.

    Of course you can save yourself all of this trouble, by spending a bit more money and buy a sensor with the plug attached
     
     

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    #33
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    Quote Originally Posted by Lez View Post
    I took the DME apart again and one of the PCB's is toast
    I was lucky enough to find a replacement on eBay for £50 with free p&p
    http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=320324395606

    It's the exact same DME, so will I have to swap over the chip from my old DME for it to work on my car?
    Good work, I would think the ECU should run the car as it is

    Quote Originally Posted by Lez View Post
    I sorted out fault 75. Turned out that I had wired the new Lambda sensor wrong, thanks to yet another website giving the wrong information

    If anyone is going to buy one of the universal lambda sensors that you fit the plug off your old sensor too, then here is the correct way to wire it

    There are 4 wires on the plug, coloured: red, white, black and yellow.
    There are 4 wires on the universal sensor coloured: black, grey & 2 x white.

    RED to WHITE = HEATER
    WHITE to WHITE = HEATER
    BLACK to GREY = SIGNAL - (or EARTH)
    YELLOW to BLACK = SIGNAL +

    NOTE:- Either of the 2 WHITE wires on the sensor can go on the RED or WHITE plug wires.

    Of course you can save yourself all of this trouble, by spending a bit more money and buy a sensor with the plug attached
    What did I say about those Lambdas
     
     

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    #34
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    Quote Originally Posted by Ronnie View Post
    Good work, I would think the ECU should run the car as it is

    What did I say about those Lambdas
     
     

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    Dr of BMW gildersol's Avatar
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    All you need to do is try it and if it won't start then swap the chip. I got the same type DME but it didn't work. Changed chip and it fired up first go.
    probably depends on the immobiliser.
    Fingers crossed it works out well
     
     

  7. The Following User Says Thank You to gildersol For This Useful Post:

    Ronnie (15-12-2008)

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    #36
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    Quote Originally Posted by gildersol View Post
    All you need to do is try it and if it won't start then swap the chip. I got the same type DME but it didn't work. Changed chip and it fired up first go.
    probably depends on the immobiliser.
    Fingers crossed it works out well
    Cheers Gildersol and thanks for your contributions over the last couple of weeks. It is very much appreciated my friend
     
     

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    #37
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    I got the replacement ECU yesterday, put it in the car and it fired up straight away without having to change the chip over. I swaped the 2 aftermarket coils that were on my car for two genuine BMW replacements, got rid of the crap universal lambda sensor and spent £85 on the correct sensor from Just Lambda's. Turns out that I had a Zirconia sensor in (wrongly advertised on ebay as being ok for my car!), when it should have been a Titania sensor . Took the car out today for a 150 mile round trip to Stroud and she ran just perfect

    Many thanks to all who helped with this thread and a merry Christmas and happy new year to you all
     
     

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    gildersol (22-12-2008),Ronnie (22-12-2008)

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    #38
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    Great news Lez and a much anticipated update, merry Christmas and a happy new year to you to
     
     

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    #39
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    Brilliant news. Isn't it great when it just fires up first time after so much hassle.

    Keep an eye on that compartment where the DME lives so it dosen't get wet

    have a good Crimbo
     
     

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    #40
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    Quote Originally Posted by gildersol View Post
    Brilliant news. Isn't it great when it just fires up first time after so much hassle.

    Keep an eye on that compartment where the DME lives so it dosen't get wet

    have a good Crimbo
    Cheers Gildersol, same to you and have a good Hogmanay
     
     

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