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fuel guage problem/ crap milage

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Old Dec 18, 2011 | 12:08 AM
  #1  
mullens's Avatar
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Default fuel guage problem/ crap milage

ive had abit of a look around on previous threads but my problem is abit different, basically this is how it works


fill up with a full tank , car registers that its empty on the gauge, fuel light is on

after a couple hundred kms it works registers @ full but i get to about 350-400kms and thats the most ill get out of the tank,

when im near empty it registers as about 1/2 a tank

seems like it has something to do with the float but has ne 1 had this problem? and any ideas on why i get such low kms per tank (this is normal driving)

thanks!
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Old Dec 18, 2011 | 12:43 AM
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I've not had that problem before, but the float sounds like a good place to start looking. The fuel mileage is probably on the low-side, but not out of the ordinary. Normal driving for me with Shell V-Power or BP Ultimate (80:20 highway:city), will get me about 450 kays. Hard driving can drop that to 350. On a pure highway cycle, I can get over 600 per tank. Have you suddenly had an increase in fuel consumption?
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Old Dec 18, 2011 | 01:21 AM
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Hey buddy not sure if this helps but was posted in another thread.


Originally Posted by s2konroids
The fuel level is basically dictated by a float, this float is on an arm with a electrical contact that registers on 10 contacts IIRC, ie so the lower the fuel level the lower the float sits and thus registers on the lowest electrical contact, think of a needle and gauge.

Its either an electrical problem, grounding, dirty contacts, problem with the gauge or something more serious.

I'd clean all contacts etc then probably remove the fuel pump as its not really that difficult. It wouldn't surprise me if there was some build up on the contact on the fuel pump register itself.
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Old Dec 18, 2011 | 09:11 AM
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Originally Posted by ninelarge
I've not had that problem before, but the float sounds like a good place to start looking. The fuel mileage is probably on the low-side, but not out of the ordinary. Normal driving for me with Shell V-Power or BP Ultimate (80:20 highway:city), will get me about 450 kays. Hard driving can drop that to 350. On a pure highway cycle, I can get over 600 per tank. Have you suddenly had an increase in fuel consumption?
yeah i was hoping someone has seen something similar before. oh really? i use bp 98 octane fuel, nah its unfortunately been the same since ive had the car


Originally Posted by VtecYo!
Hey buddy not sure if this helps but was posted in another thread.


Originally Posted by s2konroids' timestamp='1311708911' post='20817509
The fuel level is basically dictated by a float, this float is on an arm with a electrical contact that registers on 10 contacts IIRC, ie so the lower the fuel level the lower the float sits and thus registers on the lowest electrical contact, think of a needle and gauge.

Its either an electrical problem, grounding, dirty contacts, problem with the gauge or something more serious.

I'd clean all contacts etc then probably remove the fuel pump as its not really that difficult. It wouldn't surprise me if there was some build up on the contact on the fuel pump register itself.

thanks buddy ill have a look into it!
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Old Dec 18, 2011 | 02:06 PM
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Your fuel consumption doesn't seem overly high, I used to get 10-11L/100km which depending on how low you're running your tank would seem to be similar to what you're getting.

Can't help you with the crazy gauge problem, sorry.
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Old Dec 18, 2011 | 02:32 PM
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Anyone that gets more than 350km to a tank in their S2K will always amaze me... I manage about 200km max
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Old Dec 18, 2011 | 02:35 PM
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Originally Posted by mcopley
Anyone that gets more than 350km to a tank in their S2K will always amaze me... I manage about 200km max
The only way that is possible is if you sit idle 50% of the time lol.

Or your foot is on the pedal non-stop!

Or your car's F*****!
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Old Dec 18, 2011 | 02:53 PM
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Your fuel consumption doesn't seem terribly high at all. I'll do about 350-450km depending on how I drive obviously.
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Old Dec 18, 2011 | 03:58 PM
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Originally Posted by jowjeh
Originally Posted by mcopley' timestamp='1324251162' post='21246684
Anyone that gets more than 350km to a tank in their S2K will always amaze me... I manage about 200km max
The only way that is possible is if you sit idle 50% of the time lol.

Or your foot is on the pedal non-stop!

Or your car's F*****!
The only time I have the revs below 6000 are when I accelerate out of the pits - so I think it's fine. Much better fuel economy than my old MKIV TT Supra!
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Old Dec 18, 2011 | 04:44 PM
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Originally Posted by mcopley
Originally Posted by jowjeh' timestamp='1324251358' post='21246686
[quote name='mcopley' timestamp='1324251162' post='21246684']
Anyone that gets more than 350km to a tank in their S2K will always amaze me... I manage about 200km max
The only way that is possible is if you sit idle 50% of the time lol.

Or your foot is on the pedal non-stop!

Or your car's F*****!
The only time I have the revs below 6000 are when I accelerate out of the pits - so I think it's fine. Much better fuel economy than my old MKIV TT Supra!
[/quote]

LOL! Nice nice Well I'm hitting 350-450 avg myself.
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