I got a new battery because the old one basically died and won't hold a charge, tried to start the car and it will crank, but not turn over. The fuel is a little low, in the car and it had been overheating previously, but had no problems starting in any way. Any ideas?

 

Lots of ideas. Most don't have much value.

Try this link. Work down top to bottom and let us know what the situation is.

https://www.jaguarforums.com/forum/s...ad.php?t=30792