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Thread: glow duration control voltage too low

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    Default glow duration control voltage too low

    can anyone tell me what could cause the fault . glow duration control voltage too low . my eml keeps coming on every morning before i start it (ie as soon as i put he key in ) then when i start the car it goes out after about 2 minutes . but after i start it once i dont see the eml till the next morning when i first go out to start it

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    Regular Member Handyandy-UK's Avatar
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    Vehicle : BMW 525i

    Trim : SE Touring

    Engine : 3.0

    Year : 2007

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    I'm no expert on oil burners, but first for me would be checking the battery voltage both stopped and engine running. Assuming the battery's holding charge and charging ok, I'd then be looking for the glowplug relay and finally the glowplugs themselves.
    You can find various videos on YouTube about how to easily test the relay and the plugs.

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    Is the the eml light or the glowplug light? The eml light as far as I believe is the legend of an engine block.

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    Regular Member Critch's Avatar
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    Vehicle : Mk1 renault scenic... I know I know but it drives

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    Test glow plugs an an relay

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    Full Member bobssignum's Avatar
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    Vehicle : Signum 2.0 DTi

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    Usually its just one of the glow plugs getting lazy and not reacting to the sensor fast enough that triggers the warning light . I take it you mean the spanner light between the dials rather than the eml light itself .
    The fault itself is not really a problem in fact i had it on mine for over 2 1/2 years before i bothered to do anything about it it only needs attention if the light stays on after driving for a mile or so
    Driving vauxhall,s for 30 + years
    and still loving it

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    Quote Originally Posted by bobssignum View Post
    Usually its just one of the glow plugs getting lazy and not reacting to the sensor fast enough that triggers the warning light . I take it you mean the spanner light between the dials rather than the eml light itself .
    The fault itself is not really a problem in fact i had it on mine for over 2 1/2 years before i bothered to do anything about it it only needs attention if the light stays on after driving for a mile or so
    yes the spanner light . so was your a glow plug

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    Full Member bobssignum's Avatar
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    Vehicle : Signum 2.0 DTi

    Trim : Elegance/Elite

    Engine : 2.0DTi

    Year : 2003

    Mileage : 73350

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    yes m8 its just as they get older the resistance within them increases which generates the fault light . The glow plug is still working just not as fast as when it was new
    Driving vauxhall,s for 30 + years
    and still loving it

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    hi all again . i found that the glow plug nearest to the air box wasn't show any volts on it when i done the battery to glow plug test . so i went to change it and now the 10 mm socket rounded off so i tried the 9 mm and it has rounded off aswell does anyone know any other wasy to get a glow plug out ?

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    Full Member bobssignum's Avatar
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    Vehicle : Signum 2.0 DTi

    Trim : Elegance/Elite

    Engine : 2.0DTi

    Year : 2003

    Mileage : 73350

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    Soak the top of the plug in wd40 then take the car for a short drive , like just around the block to get some heat into the engine .
    then reapply wd40 , what i had to do was then with a deep 10 mm socket ,slooowwlly apply pressure to the glow plug it should give eventually .
    The secret is the engine block being warm /hot and the plug being cold
    Driving vauxhall,s for 30 + years
    and still loving it

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    Quote Originally Posted by bobssignum View Post
    Soak the top of the plug in wd40 then take the car for a short drive , like just around the block to get some heat into the engine .
    then reapply wd40 , what i had to do was then with a deep 10 mm socket ,slooowwlly apply pressure to the glow plug it should give eventually .
    The secret is the engine block being warm /hot and the plug being cold
    i tried it with a hot engine and the 10 mm sliped so i had to hit on a 9mm but that slip and rounded it now . so no even a 9mm will grab it

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