I assume you mean the speed sensors on the wheels. They do not affect the fuel pump to the best of my knowledge.

 

I’ve decided for the crank position sensor next as this appears to have all the symptoms and the read shows missing or invalid speed sensor also I once saw something about fault on crank sensor so this to me would make sense to go down this route

thanks again every one for your help I will get this right eventually lol 🤣

 

I fitted a new fuel pump car ran great for a week and then started losing fuel pressure again so I thought faulty fuel pump so I changed it again car ran great for 4 weeks then started again I haw replaced the crank sensor today but nothing so I have taken 2 pictures of fuel trims one at idle and the other at about 2000 rpm can anyone give me any ideas and where to start please.

 

I see you've got the same info posted in another thread. You may want to close that thread and keep it all here, or it would be easy to miss some important info.

Have you confirmed the pressure reading with a mechanical gauge? On an early V6, there's a handy test port close to the oil filler cap. I'd suggest making sure the actual pressure agrees with the value reported to the computer (and your scanner).

Another thought is a physical problem with the pump installation. See post #19 here:

https://www.jaguarforums.com/forum/s...4/#post2286145


That wouldn't be your exact problem, as it caused zero fuel pressure. But maybe you've got something bleeding off some but not all pressure back into the tank.