petrol gague

[Ash]

i've just fitted an sr dash in my mk2 1.2. all works fine but the petrol gague, duing a journey it will start of empty then i put 10 quid in and i got a full tank!!? looks good, sounds good (ish) not very helpful.
ne thoughts tell me

cheers

Ash

[XZiBiT]

faulty sender? faulty gauge?