Mine was intermittent also lately and I had to repair a broken wire connection at the sender that required removal of the sensor. I cut the wires just outside of the bell housing to remove it and spliced it back together after the repair. If it lasts, good. If not then I know what to do next time. I disassembled the sensor in order to get to the ring terminal connection inside the sensor. It's easy to take apart. Made a new wire with new ring terminal, reinstalled the sensor and spliced the wires back together with plenty of grease inside the multiple layers of shrink tubing.
One of the mounting bolts was extremely difficult and in order to keep from breaking it off, I worked slowly for almost 1/2hour with plenty of penetrating oil until it came out. Also used some propent torch heat on the surrounding aluminum.