Sometimes the needle stays on "E" even if it's full tank.
Sometimes it creeps up really slow until it reaches full.
Sometimes it goes to full after turning ignition off/on a few times.
Sometimes I thought someone siphoned my gas in the middle of the night. It could happen.
Is the sensor in my tank going bad? Anyone had this before?
Appreciate any input.

 

Makes me wonder if maybe one of your fuel pumps is failing. One of the symptoms I had with a faulty fuel pump was it reading wrong (showd I had close to half a tank and was bone dry).