Fuel guage

[geoff63]

My fuel gauge is permanently showing full

 

[ant797]

Could try put some injector cleaner in the tank and fill the tank up if it's stuck it might clean the sender ...or it might be a guage or earthing problem

 

[TheIceman]

My fuel gauge is permanently showing full

maybe your just getting good economy?

 

[Polaris]

Is it an original fuel pump (assembly)..? If so I would first check grounding as ant797 suggested.
Next to check is just tap the bottom of the tank - if you can see where the return line or pressure line start with some light taps with a rubber hammer along that axis.
The idea is that the fuel pump assembly sits on the bottom of the tank, so two things can occur..
1) the float arm free's up if stuck
2) any electrical connection that's gotten loose over time in the assembly settle back in place or come off - ether way you know it's where the issue is.
Note , don't bash, just tap - the plastic is old and can be a brittle by now.

 

[07GTS]

when sender fails can make gauge read full scale, check ohms to sender its prob O/C

 

[krusing]

Maybe the Float has fallen off the Sender arm, or the actual unit,
Still sounds like a Drop the Tank out job either way.
Its not a hard job, just time consuming.

Edit: Check onboard computer menu, that may also assist.

 

[geoff63]

maybe your just getting good economy?

Haha if only

 

[TheIceman]

My fuel gauge is permanently showing full

mine was going off its head again the other day, dropping to zero fuel from half tank then goes back up to half again for half the day and settled down.

 

[07GTS]

some had the opposite reading senders in them so some when they fail will read full and some will read empty

 

[TheIceman]

some had the opposite reading senders in them so some when they fail will read full and some will read empty

oh yeah of course.