98 zj fuel gauge problem

[98ZJ]

Fuel gauge has a mind of its own usually at 1/2 tank the gauge has a mind of its own, anyone come across this if so what's likely causing this, pretty sure it's the sender unit

[98ZJ]

Could this also be related to the crank sensor??

[Hunno]

Yep mine goes haywire at 3/4 - empty, full, empty, full every couple of minutes. After about 5-10 mins of driving no more problem.

[Hunno]

Could this also be related to the crank sensor??
Not for the fuel gauge, it's a stand alone circuit.