So today I went to the auto parts store and on the way there my 96 xj ran perfect. But on my way out it randomly stalled and wouldn't want to stay running for more than 30 seconds or so. After trying to keep it running a few times it gave me a P1391 code and still continued to run super rough and stall. I checked the connections to the cam and crank position sensors and they looked good. After about 30 minutes or so it seemed to clear up and I drove it home with no issues. Well I just went to start it and I'm having the same issue. Starts right up every time but stumbles and stalls shortly after. Is there something else I should check besides those two sensors and what's the best way to test them? Thanks!