Sagaris petrol gauge???
Discussion
My petrol gauge drops very rapidly, almost as I watch, I know TVR's consume quite a bit of petrol, but this is not normal. What is even stranger is that, the gauge shows the amount of petrol to increase!!
eg, yesterday I looked at the gauge, and it read : 21L fifteen minutes later it read 11L, within a few minutes the low fuel alarm went off beacuse I had 2L. I stoped driving. As I watched the gauge climed back up to 15L...
Has this happened to anyone before??
eg, yesterday I looked at the gauge, and it read : 21L fifteen minutes later it read 11L, within a few minutes the low fuel alarm went off beacuse I had 2L. I stoped driving. As I watched the gauge climed back up to 15L...
Has this happened to anyone before??
funny you should ask, had a fuel sensor alarm go and then no fuel at all registered!!!
they changed the thingy in the fuel tank ( and did a service)and all was well until, i managed to do about 60 miles on 4 litres. Now unless mine is now got the fuel economy of a diesel smart car there was a problem. New float unit thingy in tank replaced and we shall see how we go. fingers crossed.
In short i would take to teh dealer and ask for the thingy in tank to be looked at.
they changed the thingy in the fuel tank ( and did a service)and all was well until, i managed to do about 60 miles on 4 litres. Now unless mine is now got the fuel economy of a diesel smart car there was a problem. New float unit thingy in tank replaced and we shall see how we go. fingers crossed.
In short i would take to teh dealer and ask for the thingy in tank to be looked at.
Would going round corners have been involved by any chance?
Most cars do this - read more petrol going round say a left than say a right.
Lots of cars readings move around a bit but the analog needles are damped to ignore this sloshing around of petrol you don't see it.
You see it with a tvr because the digital reading is so precise, and probably takes readings too regularly for it's own good.
But in general I'd advise looking for petrol reasonably soon after the low petrol warning. I got down to less than 2 litres for real once by ignoring the fuel warning!
>> Edited by the pits on Wednesday 21st September 17:46
Most cars do this - read more petrol going round say a left than say a right.
Lots of cars readings move around a bit but the analog needles are damped to ignore this sloshing around of petrol you don't see it.
You see it with a tvr because the digital reading is so precise, and probably takes readings too regularly for it's own good.
But in general I'd advise looking for petrol reasonably soon after the low petrol warning. I got down to less than 2 litres for real once by ignoring the fuel warning!
>> Edited by the pits on Wednesday 21st September 17:46
Oh yes, this is a standard problem. The fuel gauge is just plain rubbish. Basically ignore it. Inatead use the DJC calculator.
Ive averaged out my fuel consumption so far and we are working out something like 6.67 miles per litre of fuel.
My standard fill up is £10, so 10ltr of fuel and therefore about 66 miles.
Follow that and you wont go far wrong. Take it in longer A and M roads journeys and you are looking at about 70miles to the tank.
As to measuring fuel in a car's tank, esp digitally it is actually relatively hard. Car makers will only ever get it basically wrong because they use the cheap and simple approach. To get it properly accurate you have to start using volume and weight calculations and pressure calculations. It can get pretty funky actually, but you really do have to be a geek to care. Ahem
DJC said:
Oh yes, this is a standard problem. The fuel gauge is just plain rubbish. Basically ignore it. Inatead use the DJC calculator.
Ive averaged out my fuel consumption so far and we are working out something like 6.67 miles per litre of fuel.
My standard fill up is £10, so 10ltr of fuel and therefore about 66 miles.
Follow that and you wont go far wrong. Take it in longer A and M roads journeys and you are looking at about 70miles to the tank.
As to measuring fuel in a car's tank, esp digitally it is actually relatively hard. Car makers will only ever get it basically wrong because they use the cheap and simple approach. To get it properly accurate you have to start using volume and weight calculations and pressure calculations. It can get pretty funky actually, but you really do have to be a geek to care. Ahem
6.67 miles per litre = just over 30mpg. Are you sure? I know you're still running it in, but unless you're doing 70 in 5th gear 100% of the time this can't be right. Either that or your car is running so lean its about to go pop
I get 22-24mpg from my T350, 26-27mpg on a motorway cruise not too far into illegal speeds. (Or 4.85 miles to the litre and 5.7 miles to the litre for metric traitors
)targarama said:
6.67 miles per litre = just over 30mpg. Are you sure? I know you're still running it in, but unless you're doing 70 in 5th gear 100% of the time this can't be right. Either that or your car is running so lean its about to go pop
I get 22-24mpg from my T350, 26-27mpg on a motorway cruise not too far into illegal speeds. (Or 4.85 miles to the litre and 5.7 miles to the litre for metric traitors
Just worked out my MPG today, and, suprisingly, it works out exactly the same as your calculations!
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