Gas gauge troubles

[xtreme80]

Hey guys,

Last night my gas gauge started giving me troubles. I was cruising, looked down, and it's pegged at full. It actually should have been reading half tank at the time. Then it jumped down to 3/4 tank, and back up, and its just been fluctuating all over since last night.

When the needle moves, it's very shaky and jerky when it moves... but the sending unit is fairly new (8 months).

Would you guys say it's the sending unit and not the gauge, based on the shaky needle?

Thanks everyone