Fuel gauge not working

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
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ShazRS6
1st Gear
Posts: 59
Joined: Tue Jul 10, 2018 9:41 pm

Fuel gauge not working

Post by ShazRS6 » Wed Jul 25, 2018 6:15 pm

Guys the other day the fuel gauge started playing up

And then yesterday put £40 in and needle only moved about 1mm

On miles showing up 5-10miles

Any idea what I need to do to fix this please?
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ahoooga
5th Gear
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Joined: Thu Dec 20, 2012 11:14 pm
Location: Well in front of that RS4

Re: Fuel gauge not working

Post by ahoooga » Wed Jul 25, 2018 6:29 pm

sender unit in the fuel tank maybe ?
Possible bad connection on back of binnacle ?
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Shoppinit
Cruising
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Joined: Wed Dec 31, 2008 6:24 pm

Re: Fuel gauge not working

Post by Shoppinit » Wed Jul 25, 2018 8:17 pm

Sender unit.

/Vagcom will confirm.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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ShazRS6
1st Gear
Posts: 59
Joined: Tue Jul 10, 2018 9:41 pm

Re: Fuel gauge not working

Post by ShazRS6 » Wed Jul 25, 2018 9:06 pm

Anyone local to barking Essex who has Vagcom?
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PipRS6
2nd Gear
Posts: 191
Joined: Thu Apr 26, 2018 1:07 pm

Re: Fuel gauge not working

Post by PipRS6 » Thu Jul 26, 2018 12:03 pm

ShazRS6 wrote: ↑
Wed Jul 25, 2018 9:06 pm
 Anyone local to barking Essex who has Vagcom?
You will be better off buying it. It is only about £250 from memory for a basic one. And it will be the most useful thing ever!
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Ben_r1
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Joined: Mon Nov 20, 2017 8:38 am
Location: Essex

Re: Fuel gauge not working

Post by Ben_r1 » Thu Jul 26, 2018 5:20 pm

Anyone link a Vagcom setup I’d like to invest in one myself?
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Mɐʇʇ
Cruising
Posts: 2683
Joined: Tue Oct 07, 2014 8:30 pm

Re: Fuel gauge not working

Post by Mɐʇʇ » Thu Jul 26, 2018 10:17 pm

I bought mine from https://www.gendan.co.uk
"not a professional engineer, mechanic and mechanist"
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Shoppinit
Cruising
Posts: 19830
Joined: Wed Dec 31, 2008 6:24 pm

Re: Fuel gauge not working

Post by Shoppinit » Fri Jul 27, 2018 5:22 am

Got mine from https://www.ilexa.co.uk/diagnostic-tool ... -vcds.html
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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ShazRS6
1st Gear
Posts: 59
Joined: Tue Jul 10, 2018 9:41 pm

Re: Fuel gauge not working

Post by ShazRS6 » Tue Jul 31, 2018 10:44 pm

Funny enough I put in £60 the other day and it’s sorted it self out😂
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simonpoulton
3rd Gear
Posts: 265
Joined: Sat Mar 05, 2016 6:40 pm
Location: Essex

Re: Fuel gauge not working

Post by simonpoulton » Wed Aug 01, 2018 12:05 pm

Mine does this too - it's fine from full tank to about 1/3 then goes pie shaped from there. My theory is that it's so expensive to run, people just top it up with 30 quids worth and its worn out the sender on that last bit of the range.

Do we have multiple senders in the c5?
Current: RS6 C5 Avant, E60 5 Series, '78 Mini (Queued for restoration)
Past: R56 Mini Cooper S
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srichards
4th Gear
Posts: 614
Joined: Sun Oct 18, 2015 12:39 am

Re: Fuel gauge not working

Post by srichards » Wed Aug 01, 2018 4:50 pm

If it's like the C6 A6 it may be worth watching below video for ideas on why it's not working properly.

https://www.youtube.com/watch?v=J-bwQaUpq88
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