1996 e39 525 tds - not starting poss elec fault HELP NEEDED !!

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  1. 1996 e39 525 tds - not starting poss elec fault HELP NEEDED !! 
    #1
    Bimmer Fan
    Car Details
    e39ken's Car Details
    Model of Car:
    e39 525 tds se
    Year of Manufacture:
    1996
    Transmission Type:
    manual
    Car Body Type:
    saloon

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    Jul 2012
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    i have a 1996 e39 525 tds which has now decided t not start ? lift pump is fine, new diesel filter, new liftpump relay but what i have noticed isthere is no power to the lift pump and if i put a supply to lift pump it still will not start as no fuel gets to injectors its as if there is a shut off valve on or as if it is imobilised etc but i am stuck now. any ideas ???
     
     

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    #2
    BMW Guru
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    TheEnd's Car Details
    Model of Car:
    540
    Year of Manufacture:
    1998
    Transmission Type:
    Auto
    Car Body Type:
    Saloon
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    When did it stop? Were there parts changed at that point?
     
     

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    #3
    Bimmer Fan
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    e39ken's Car Details
    Model of Car:
    e39 525 tds se
    Year of Manufacture:
    1996
    Transmission Type:
    manual
    Car Body Type:
    saloon

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    chester
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    car was running ok turned it off on sun night came to start it mon morning and nothing so checked a few things and then replaced the lift pump relay but still nothing ? no power supply to lift pump at all but even if i hard wire lift pump there must be a stop valve on the main pump as no fuel getting to injectors
     
     

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    #4
    BMW Guru
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    TheEnd's Car Details
    Model of Car:
    540
    Year of Manufacture:
    1998
    Transmission Type:
    Auto
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    Saloon
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    Unless there are extra alarms, if the engine is turning over, the BMW part should be fine, and everything should be good to go.
    Are you getting any other strange electrical issues?

    Ignition switches can play up, and that can mean some circuits don't get powered up when they should.
     
     

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    #5
    Bimmer Fan
    Car Details
    e39ken's Car Details
    Model of Car:
    e39 525 tds se
    Year of Manufacture:
    1996
    Transmission Type:
    manual
    Car Body Type:
    saloon

    Join Date
    Jul 2012
    Location
    chester
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    got new batterys for bmw fob and no change only std bmw alarm so got another ecu plugged that in now at least it says it is pre-heating and can hear lift pump working but now battery is flat and window is open so just hope it dont rain ?? will have to see what happens now when battery charged ?? as i was told the ecus dont like jump packs etc
     
     

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    #6
    Bimmer Fan
    Car Details
    e39ken's Car Details
    Model of Car:
    e39 525 tds se
    Year of Manufacture:
    1996
    Transmission Type:
    manual
    Car Body Type:
    saloon

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    Jul 2012
    Location
    chester
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    the only other issue besides it not starting lol is there is a fan inside the dash that keeps on going for a while even when i get out of the car and lock it etc oh and the pixels in the clocks work when ever they like but funny enough while its decided not to run all the pixels are working great ?? sods law ;-) so if no joy when its charged up i will try the ignition barrel next ??
     
     

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    #7
    BMW Master
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    Bmw320d se's Car Details
    Model of Car:
    320d se
    Year of Manufacture:
    2002
    Transmission Type:
    Steptronic
    Car Body Type:
    Saloon
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    I had this issue on my 320d, turned out to be the immobiliser relay rather than the fuel pump relay! Worth a try? Have you read any fault codes?
     
     

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    #8
    Bimmer Fan
    Car Details
    e39ken's Car Details
    Model of Car:
    e39 525 tds se
    Year of Manufacture:
    1996
    Transmission Type:
    manual
    Car Body Type:
    saloon

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    Location
    chester
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    all sorted now and running had to get it all reprogrammed but now cruise control does not work ? ahhhhhhhhhhh............... lol ...... i hate electronics........
     
     

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