A week ago my disco did not start after gas fill up. Waited for AAA for an hour and started again and drove home instead. Weather was cool following day and was able to drive short distances without issues. Drove longer and wont start again. Took to shop and replaced with new fuel pump from AB. Day after, weather hot and drove 15 miles and went to store bought something and wont start again. Any guess what is going wrong? Thank you.

 

crank shaft position switch