Technical Petrol pump removal
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Technical Petrol pump removal
Blueboy54123
Member
Strange 1we connected it up set the float to full turned ignition to 1 the gauge went to full we moved the float up and down but it stayed at full turned ignition off set float at 1/4turned ignition on gauge went to 1/4 moved float up and down nothing it stayed at 1/4 so the gauge is responding but something is faulty
Great we are moving forwards
It measures correct at full
It measures correct at half
It measures correct at empty
The gauge and software and wiring are all correct
There's no shorts, open or high resistance
The gauge isn't directly connected to the sender
The level is calculated via a software algorithm to avoid the gauge jumping around up hills, down slopes
If it suddenly drops it's going to think there is a problem, until the ignition is switched off and on again
No doubt if you read the fuel level via the body computer with software it's going to be correct
Let's go back to the original symptoms, and try and understand what's going on
How long have you had the car, has it always been like this, and so on
It measures correct at full
It measures correct at half
It measures correct at empty
The gauge and software and wiring are all correct
There's no shorts, open or high resistance
The gauge isn't directly connected to the sender
The level is calculated via a software algorithm to avoid the gauge jumping around up hills, down slopes
If it suddenly drops it's going to think there is a problem, until the ignition is switched off and on again
No doubt if you read the fuel level via the body computer with software it's going to be correct
Let's go back to the original symptoms, and try and understand what's going on
How long have you had the car, has it always been like this, and so on
Blueboy54123
Member
I bought it for my son about 6 weeks ago when we picked it up it was on low no reason to believe it was broken put £20 in went to 3/8 then next week I told him to fill it up about £25 but got in the car and it was still at 1/4 that's as much as I know mate
Blueboy54123
Member
It seems whatever position the float is in it will go straight there but if you move the float up or down nothing happens it stays where you asked it to go
Blueboy54123
Member
Blueboy54123
Member
wherever you put the float it goes straight there but once there if you try to alter it up or down nothing happens
This is correct behaviour
It's software driven,
You don't fill the car with the ignition on
It will reset when the ignition is switched back on
It will not register instantly massive movements as it assuming your cornering, backing or on a slope left to right or up and down
Blueboy54123
Member
So does that mean there is nothing more we can do as it's still showing the wrong reading
The gauge is non linear
We don't know how low the gauge was before the £20 was put in or where it was when the £25 was put in
How many litres were put in (price per liter)
How much driving was done in the week
Just too many variables
I suspect if you make a note of where the gauge is now, and you put another 5 or 10 liters n yourself, it would register correctly within a mile or so
We need to keep an eye on it
It doesn't appear to be miles out
The gauge is non linear,
From the top of the orange to the bottom empty is roughly 3-4 litres but there isn't 10 of these segments to full, from full empty to brim full is over 40 litres, (yes it officially 35) but neither extreme is good for the cat
You can go quite a bit under the empty maybe another 100 miles if it's flat
But if you do drive it this low the first few quid when you do fill up not move the gauge
i put a spare petrol can in the car and run it until the orange light came on
Blueboy54123
Member
Blueboy54123
Member
Morning koaler
Yes while testing the float outside the tank the gauge behaved as it should except if we set it to full it went to full but if we tried to then bring the float down the gauge didn't move for some reason that's beyond me .Whatever position we started it at the gauge went there but after that we wasn't able to adjust it higher or lower it is now back to the original setting of between 1/4 and1/2 ish today we are hoping to put all the back end back together hopefully then put a few miles on it see what happens then put some fuel in it and see if anything changes.
Yes while testing the float outside the tank the gauge behaved as it should except if we set it to full it went to full but if we tried to then bring the float down the gauge didn't move for some reason that's beyond me .Whatever position we started it at the gauge went there but after that we wasn't able to adjust it higher or lower it is now back to the original setting of between 1/4 and1/2 ish today we are hoping to put all the back end back together hopefully then put a few miles on it see what happens then put some fuel in it and see if anything changes.
It's behaving how I would expect it to
You can't just move it up and down and expect to see a change, the gauge is software driven, no doubt if you could read the body computer directly it would indicate the actual float level
But the gauge will not
Here fiats explanation
In advance of the Service Manual update we are enclosing the notes (1 and 2) on the fuel level gauge system operating logic
Note 1 - valid for all models
The fuel gauge on the vehicle uses a strategy designed to ensure that the reading in the instrument panel is strictly correlated to the mass of fuel effectively in the tank and is barely influenced by such external factors as:
-the fuel splashing around (whilst driving);-vehicle manoeuvring and/or positioning whilst driving/parking (errors due to parking on an incline, slope, etc.).-long ascents/descents or long bends, etc.
However, if these external factors persist, this could produce instrument panel readings that are not totally in line with the actual quantity of fuel (which will, however, in time, be correct).
Note 2 - only valid for the Panda 169 - Idea - Stilo - Doblò - Punto
For the "Panda 169 - Idea - Stilo - Doblò - Punto" models only the fuel gauge operating logic ensures that the reading is updated each time the ignition key is turned ON and only following an increase/decrease of around 5 litres of fuel, in relation to the condition memorized after the engine was last switched off.
Therefore it is natural that the instrument panel reading will not change if less than 5 litres of fuel is introduced.
You can't just move it up and down and expect to see a change, the gauge is software driven, no doubt if you could read the body computer directly it would indicate the actual float level
But the gauge will not
Here fiats explanation
In advance of the Service Manual update we are enclosing the notes (1 and 2) on the fuel level gauge system operating logic
Note 1 - valid for all models
The fuel gauge on the vehicle uses a strategy designed to ensure that the reading in the instrument panel is strictly correlated to the mass of fuel effectively in the tank and is barely influenced by such external factors as:
-the fuel splashing around (whilst driving);-vehicle manoeuvring and/or positioning whilst driving/parking (errors due to parking on an incline, slope, etc.).-long ascents/descents or long bends, etc.
However, if these external factors persist, this could produce instrument panel readings that are not totally in line with the actual quantity of fuel (which will, however, in time, be correct).
Note 2 - only valid for the Panda 169 - Idea - Stilo - Doblò - Punto
For the "Panda 169 - Idea - Stilo - Doblò - Punto" models only the fuel gauge operating logic ensures that the reading is updated each time the ignition key is turned ON and only following an increase/decrease of around 5 litres of fuel, in relation to the condition memorized after the engine was last switched off.
Therefore it is natural that the instrument panel reading will not change if less than 5 litres of fuel is introduced.
Blueboy54123
Member
Absolutely nothing
