just wanting to know how the readings are done, is it the fuel pump that's tell us how much petrol we have. distance to empty 34kms, but when filled up only got 55 ltrs in there so still 13ltrs left. so got aleast another 100ks to go. anyone know what to change.

Whether it be a BA, BF or FG, the problem seems to all be the same.

There is a float in the tank that connects to a metal rod that connects to the sensor. Ford seem to install these sensors badly and the float arm gets a little bend in it. The bend makes the gauge display incorrect readings. A 10 to 17L difference is the norm.

My BF had a constant 13L difference.

Just a matter of running the tank low, removing the sensor and float arm and straightening the arm. Problem then fixed.

All it takes is a 1 or 2mm bend and the thing is up the creek.

thanks mate.

Caused by incompetence during manufacture? I was fairly certain it would've been written into the ECU code and as sort of safety margin

Its a safety margin built into the system.

The range is worked off of your average consumption.

As far as everyone that has fixed it can see, its a problem with the float arms being bent. Its not a "safety net" built into the gauge display.

A safety margin might be say 5 litres. Not the 10 to 17 that everyone else seems to be experiencing.

Proof???

FG:

What the manual says it should look like:

What a user on AFF removed from his tank:

BF:

In my BF I had Ford replace the sender 3 times, and still had inaccuracies of 10 to 15l. The manual states above not to bend the float arm. Mine was bent down by about 2mm according to my square at that 90 deg bend. Straightened it out, and now its litre perfect.

A few FG owners have talked Ford into getting new senders. Another guy had a bent and twisted rod. New sender and float, now his FG is near litre perfect as well.

Sorry Arm, posted from my phone. Forgot the italics to portray the intended sarcasm........

Ford build quality strikes again

IIRC the "reserve" is 5ltrs?

Ah my bad. Sarcasm accepted as intended.

But I know now I fixed my float arm, I have no reserve. Empty is empty. There is a variance of 1lt at most.

Edited 08/07/11 06:11 AM08/07/11 06:11 AM by arm79

edit: dw

Edited 09/07/11 12:21 PM09/07/11 12:21 PM by brettenator