7.3 fuel shut off solenoid

[Charlie1952ford]

whats the tale tell signs of a failing fss? Also where is a good place to get one? I’m sure eBay is not the best quality.

 

[IDIBRONCO]

I'm not sure if there is a tell tale sign. I thought that usually, they just quit working. I suppose that maybe it could get weak and maybe not work sometimes.