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Thread: Cranking but no start - no fuel pump sound

  1. #1
    Member KoLoS's Avatar
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    Cranking but no start - no fuel pump sound

    Hi guys,

    i've issue similar to this video
    https://www.youtube.com/watch?v=v9IRusTgrus

    engine cranks but no start, i've noticed that there is no fuel pump sound (when i turn key to ignition position).

    pump relay checked
    hot wired pump - still no sound of working
    LH module replaced
    GM module replaced

    any ideas what next should i check?
    whitch fuses are responsible for fuel pump?


  2. #2
    Senior Member S70/2's Avatar
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    Re: Cranking but no start - no fuel pump sound

    You jumped the relay and it still did not run the FP? Check for 12 volts at the pump terminals, if it is present looks like your pump is dead.

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  4. #3
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    Re: Cranking but no start - no fuel pump sound

    Quote Originally Posted by S70/2 View Post
    You jumped the relay and it still did not run the FP? Check for 12 volts at the pump terminals, if it is present looks like your pump is dead.
    I agree with the idea that it may be your fuel pumps. Try tapping each fuel pump while someone starts the car.

  5. #4
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    Re: Cranking but no start - no fuel pump sound

    have you put power onto the pumps directly?to see if they actually work?
    1992 w124 500e "Blackbeauty"
    1989 w201 190e 2.5-16 Evo spec "Evoltwin"
    2003 Ford Focus Rs (Sold )

  6. #5
    Member KoLoS's Avatar
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    Re: Cranking but no start - no fuel pump sound

    Quote Originally Posted by luckymike View Post
    I agree with the idea that it may be your fuel pumps. Try tapping each fuel pump while someone starts the car.
    There is 12 volts at the pump terminals, I'm wondering how it's possible to die two pumps at the same time?

  7. #6
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    Re: Cranking but no start - no fuel pump sound

    Quote Originally Posted by KoLoS View Post
    There is 12 volts at the pump terminals, I'm wondering how it's possible to die two pumps at the same time?
    If the car sat for any length of time (i.e., months) it would not be unheard of for both pumps to die, especially if they are original.

    If you have 12v directly at the pumps and they aren't running, I don't see what else it could be.


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    Re: Cranking but no start - no fuel pump sound

    Ok we'll see. I've orderd two Bosch pumps 0580254950.
    Any other parts should I buy (gaskets, etc)

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    Re: Cranking but no start - no fuel pump sound

    Quote Originally Posted by KoLoS View Post
    Ok we'll see. I've orderd two Bosch pumps 0580254950.
    Any other parts should I buy (gaskets, etc)
    If the filter is old, change that while you're in there.

    Assuming you do not have a very late build Euro-spec car, inspect the high pressure hose at the outlet of the fuel filter. If it's not recent OE MB, replace it. Details are in this thread, part number is in post 8:
    https://www.500eboard.com/forums/showthread.php?t=8977


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    KoLoS (03-05-2018)

  12. #9
    Member KoLoS's Avatar
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    Re: Cranking but no start - no fuel pump sound

    New set of fuel pumps solved my problem Thanks for help.
    Car is running
    Attached Images Attached Images

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    gerryvz (04-12-2018), gsxr (04-12-2018), lowman (04-12-2018), sheward (04-12-2018)

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    Re: Cranking but no start - no fuel pump sound

    awesome!Congratulations
    And thank you for feedback,Good thing to follow up the thread with a solution when solution was found

    Greetings from Norway
    1992 w124 500e "Blackbeauty"
    1989 w201 190e 2.5-16 Evo spec "Evoltwin"
    2003 Ford Focus Rs (Sold )

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