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  1. #1
    firestorm4th's Avatar
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    fuel guage isnt going up even when i just put £20 unleaded in...

    my fuel gauge is stuck on reserve and slowly going down, i just put £20 worth of fuel in and on the dashboard it still says i got 15miles of fuel left...

    i drove it around too see if its stuck but now it says i got 10 miles of fuel left, ive no idea what could be wrong :/

    also my reverse lights suddenly stopped working and have a constant "air bag" message on the dash

    can anyone shed some light on this matter?


    thanks
    Last edited by firestorm4th; 25th July 2011 at 13:50.

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  3. #2
    Sandip's Avatar
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    The fuel gauge issue could be the sender, may just need a clean

    The reverse light could either 2 blown bulbs or the switch on the gearbox (easy change)

    Airbag light - no idea, possible fuse??
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  4. #3
    firestorm4th's Avatar
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    cheers, how do i access the sender? is it in the fuel tank?

  5. #4
    S3featesV9's Avatar
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    under the rear seats i think bud. not 100% sure though. it is on most cars, under a circular plate.
    MODS - Custom Code phase 1, 007p DV, various powerflex bushes, EBC grooved and drilled - red stuff pads, N249 deletion. Badger5 V2 80mm TIP. Scorpion backbox + custom centre section, LCR front splitter, Jetex Fr-08001, R32 rear ARB, Forged IE rifle drilled rods, 20mm rear & 15mm front spacers.

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  6. #5
    liquids3's Avatar
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    Just fuel prices im affraid!,joke!,yea its under the rear seats!

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  7. #6
    firestorm4th's Avatar
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    cheers guys :D

  8. #7
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    If I put £15 in my car in but do it in 3 £5 pumps my fuel gauge doesn't recognize it and the gauge and trip reading stay the same as before but if I put £15 in at once it shows on the gauge lol

  9. #8
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    Umm, I just dont think that the ECU is clever enough to detect 3 £5 pumps been used. Why would you go to a garage and use 3 different pumps just to put £5 in your tank from each pump, I must be missing something lol

    DC
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  10. #9
    "Stick a V8 in it!"

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    The guage/cluster tries to be clever, and smooths out small changes, in an effort to stop the guage shooting away up or away down like you'd get on older cars if you parked on an incline.

    If you brimmed the tank does the gauge correctly move round to full?

    I hate petrol stations, and the cheap one is a fair drive from here, so i tend to always brim the tank. End of the day your going to put the same amount in over the course of a month whether you brim it or stick 4 lots of 15quid in each week.

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  11. #10
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    Quote Originally Posted by DenCar View Post
    Umm, I just dont think that the ECU is clever enough to detect 3 £5 pumps been used. Why would you go to a garage and use 3 different pumps just to put £5 in your tank from each pump, I must be missing something lol

    DC
    Well I found this out when I had something silly like 5 miles left on the trip and the closest station was an ASDA one, so put £5 in just to get me across the city to get to a Tesco to put in the 99 ron. So chucked £5 in started the car and I still had 5 miles. So got back out and put another £5 in and then still had 5 miles left on the trip and the gauge hadn't moved either. So I thought s**t and put in another £5 haha and then boom I had 90 miles of range or something. Just thought it was strange to be honest.

  12. #11
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    Yeah nice one joe, explains it now lol

    DC
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  13. #12
    firestorm4th's Avatar
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    ok im in a bit of a pickle now

    im in the middle of sorting our the fuel problem, i lifted up the back seats and saw the big circular plate and saw another really small one but it was covered in dust, as i went to clean the dust off it suddenly fell through the hole... ive no idea what hole that is but it doesnt look good

    as for the sender, ive opened the circular plate and saw alot of wiring with some plugs of some kind, which one is the sender exactly? anyone have any pictures because ive googled it with no luck

  14. #13
    "Stick a V8 in it!"

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    take a photo?

    On the A4 the pump and sender is one combined unit, not sure if A3 is the same.

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  15. #14
    firestorm4th's Avatar
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    ok heres the one behind the driver seat under the rear seats:




    and the other behind the passenger seat:




    ive managed to get the rubber lid out the small hole using chopsticks :D

    oh my car is an S3 2000
    Last edited by firestorm4th; 27th July 2011 at 15:38.

  16. #15
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    the one behind passenger seat is the sender. its all one unit. give the plugs and pins a good clean up. also the black disc around the egde should screw off enabling you access to the inner part. if im correct. only ever taken one apart on a cooper s. and looks exactly the same. fuel senders arent really common to fail as there always clean...but the level sensor can stick. just give the fuel tank a knock with a rubber malet...usually does the job at work.

    hope it helps
    MODS - Custom Code phase 1, 007p DV, various powerflex bushes, EBC grooved and drilled - red stuff pads, N249 deletion. Badger5 V2 80mm TIP. Scorpion backbox + custom centre section, LCR front splitter, Jetex Fr-08001, R32 rear ARB, Forged IE rifle drilled rods, 20mm rear & 15mm front spacers.

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  17. #16
    firestorm4th's Avatar
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    ok ive managed to get the whole fuel sender out and saw the level stick so i gave it a bit of exercise work with the key in ignition to check if there is any response on fuel gauge, the gauge only went up to half tank if u pull the level stick all the way and the whole sender itself looks really clean so im not pretty sure what is exactly wrong, could be the sender faulty?

  18. #17
    S3featesV9's Avatar
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    Fuel gauage float sender Audi A3 TT Golf R32 8L9919673K | eBay

    maybe this could need replacing?

    quite a few on ebay so i imagine they are a popular 'buy' as such.
    MODS - Custom Code phase 1, 007p DV, various powerflex bushes, EBC grooved and drilled - red stuff pads, N249 deletion. Badger5 V2 80mm TIP. Scorpion backbox + custom centre section, LCR front splitter, Jetex Fr-08001, R32 rear ARB, Forged IE rifle drilled rods, 20mm rear & 15mm front spacers.

    TO DO - Coilovers, adjustable tie arms, DP/mani/decat, FMIC and new remap


  19. #18
    fingermouse's Avatar
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    I did a write up on this somewhere, you can strip the float arm off the sender and get to the circuit type board. You can clean the contacts up and check the small arms that go up and down the contacts. then rebuild and it might be ok.

    Its tricky to get out isn`t it lol
    red to red black to black blue to bits

  20. #19
    firestorm4th's Avatar
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    well after a couple of days filling up, the gauge just miraclulously started working again... and its been working ever since :D

 

 

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