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Thread: 2003 1.9 TDS A4 where my fuel pump relay and what numbers are on it?

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  1. 2003 1.9 TDS A4 where my fuel pump relay and what numbers are on it? 
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    Hi All

    my my niece has a 1.9 tdi and it spluttered and stopped.
    Had a quick look tonight and I canít see any fuel in the filter .
    It was a bit low on fuel but warning light wasnít on and weíve put 2 gallons in for good measure.
    Im thinking it might be the fuel pump relay . Does anyone know where and which one it is?

    Also can I check the relay and pump by removing the supply line from the fuel filter and turning ignition on ? Would I get a flow of derv if all was well?

    any thing else obvious I should try?

    cheers

    vin
     
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  2. Re: 2003 1.9 TDS A4 where my fuel pump relay and what numbers are on it? 
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    Disconnect the fuel supply to the filter and cycle the ing it should pump for a few seconds,its not continuous.
    A4 B6,A4B7Quattro,MK4 Golf,MK5Golf gone and well forgotten,MK6Golf.
     
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  3. Re: 2003 1.9 TDS A4 where my fuel pump relay and what numbers are on it? 
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    Thanks for replying nevo

    Ive tried it this evening with the ignition on and turning the engine over but neither pumped any diesel out.
    I’m now assuming it’s either the fuel pump relay or the pump itself .
    i need to locate the relay. Before I left the car tonight I took a photo of the relays. These are under the dash but I’ve just found out that there may be relays in the plenum chamber and it can also be in there .
    Im guessing by the lack of relays in the bank of 6 then they must be under the bonnet ? Any one know which one it is
    5A60F0D8-D535-4FCF-971A-3166D6F6D31D.jpg

    Cheers

    vin
     
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  4. Re: 2003 1.9 TDS A4 where my fuel pump relay and what numbers are on it? 
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    I also changed the fuel filter and have the battery on charge tonight just to be sure no issues with either

    Cheers

    vin
     
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  5. Re: 2003 1.9 TDS A4 where my fuel pump relay and what numbers are on it? 
    #5
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    Thanks for replying nevo

    Ive tried it this evening with the ignition on and turning the engine over but neither pumped any diesel out.
    Iím now assuming itís either the fuel pump relay or the pump itself .
    i need to locate the relay. Before I left the car tonight I took a photo of the relays. These are under the dash but Iíve just found out that there may be relays in the plenum chamber and it can also be in there .
    Im guessing by the lack of relays in the bank of 6 then they must be under the bonnet ? Any one know which one it is
    5A60F0D8-D535-4FCF-971A-3166D6F6D31D.jpg

    Cheers

    vin
     
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  6. Re: 2003 1.9 TDS A4 where my fuel pump relay and what numbers are on it? 
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    I’ve just checked in the plenum chamber
    there are no relays in there only the ecu
    it has to be one of these ? Any one know which one ?
    7161C9EB-85D0-4EAB-890E-E988BA83E5DB.jpg
     
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  7. Re: 2003 1.9 TDS A4 where my fuel pump relay and what numbers are on it? 
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    Are there relays under the ecu in the plenum chamber ?
    in here
    1E733805-34DF-4F35-9E4F-DE2B6B35F5E1.jpg
     
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  8. Re: 2003 1.9 TDS A4 where my fuel pump relay and what numbers are on it? 
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    I would take out the rear seat and get a multimeter on the two outside wires on the pump connector,the inner one's are for the level.the relay is supposed to be in the car under the steering wheel,is there any with 167 printed on?
    A4 B6,A4B7Quattro,MK4 Golf,MK5Golf gone and well forgotten,MK6Golf.
     
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  9. Re: 2003 1.9 TDS A4 where my fuel pump relay and what numbers are on it? 
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    I took the ECU out of its box in the plenum chamber and found these underneath !
    apparently the small one on the right is the fuel pump relay no 395 . It’s superceeded by Audi prt number 4H0 951 253 C which has 646 stamped on it.
    the location is j17 . Will be ordering tomorrow from local dealer.
    1863AA4B-7BF8-4FC7-9ECF-62FA0ADA0A76.jpg
     
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  10. Re: 2003 1.9 TDS A4 where my fuel pump relay and what numbers are on it? 
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    Quote Originally Posted by vinpetrol View Post
    Are there relays under the ecu in the plenum chamber ?
    in here
    1E733805-34DF-4F35-9E4F-DE2B6B35F5E1.jpg
    Unclip the ECU and there is a relay carrier underneath.

    Sent from my SM-G930F using Tapatalk
    A4 2.5 tdi QS (mapped)


     
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