I recently had an experience with my XJ where it would crank but not start. For two days this problem confounded me. Thankfully, it occurred at home and not in the middle of nowhere! After consulting the previous owner, (my uncle) he recalled a similar situation happening with it ten years ago. I think that I isolated the problem to the crankshaft position sensor, because when I unplugged and re-plugged the connector, it started like nothing was ever wrong! I've driven it about a dozen times since with no issues. HOWEVER...I'd just like to know if it's going to be OK, or if I'm playing with fire and should get a new CPS A.S.A.P.?
Any input would be appreciated!