I have a 2001 jaguar xkr. The vehicle will crank up and turn right back up. I check the fuel pressure it's shooting out the rails. Change the mass air flow sensor. It still doing the same thing. I got a code for a air control valve and map sensor too

 

What are the actual code numbers?

 

P0102

 

Check your air filter and make sure your airbox is not full of debris. Make sure the wires at your MAFS are not damaged.

 

The air filter was real dirty we replace it and the mass air flow sensor and the map sensor.

 

You should check your fuel pressure with a gauge. If it is just sqirting out you may have some pressure, but not necessarily the right pressure or enough fuel volume.

Also remove a spark plug or two and check if the plugs are wet (flooded with gas) or fouled.

While you have a plug out, ground the metal shell to the engine while someone cranks and make sure your ignition is not going off.