I'm a new LR owner (2006 LR3 SE V8). It's a high miler that I am "bringing back to life." After installing a used engine (original had warped heads), it ran fine. Boom, all of a sudden it wouldn't turn over. After repeated attempts, it fired up and ran fine. A new battery was a part of the engine swap. The battery tests perfect. Now, once again, it won't turn over and is in the garage. What is my priority hit list to check what component stands in the way of getting my LR started?