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Thread: Intermittent No Start. A4 Tdi 1.9L 1999 Estate

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  1. Intermittent No Start. A4 Tdi 1.9L 1999 Estate 
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    Hi.

    New to the forum. Hope you can help.

    I have a mate who has an Audi A4 Tdi 1.9L 1999 Estate

    It has recently started misbehaving.

    He will turn on the ignition and the fuel gauge will not move and the car won't start.

    If he tries a few times the fuel gauge will work and the car will start. So it's intermittent.

    Is this OBD2 do you know? I haven't scanned it yet.

    I am thinking fuel pump relay first but I don't have a clue where it is on this car or what type it is.

    There are some relays under the ECU in the plenum area and some under the dashboard I believe.

    Does anyone have an idea where the fuel pump relay is?

    If it was just the gauge that was the problem I would think the sender unit was faulty but given that
    there is no start as well then it may need a new pump if the sender is integral with it.

    Then again it might be the ignition switch. It feels worn.

    But I am looking to change the relay first.

    So if you have any info I would appreciate it.

    Also, is it worth buying the Haynes manual for this car? I read somewhere that it doesn't contain relay
    and fuse information because at the time of publication the car manufacturer kept changing the locations
    and fuses.

    Anyway.

    Hope you can help.

    Cheers
    Last edited by RayPooley; 17-04-2019 at 09:54 AM.
     
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