My 90' XJS Convertible will start/run but only for 9minutes before it shut off.

What is your question?

This is also right around the time the engine reaches normal operation temperature. My XJS has 96,000 miles. She sat (un-driven) for about 3yrs but I went out and start her up every so often over the three 3yrs and now this problem. Fuel is good (New Fuel Pump and Filter), battery is good. I have replaced both Engine Coolant Temperature Sensor (ECTS) and my Intake Air Temperature Sensor (IATS). Could it be my Fuel Pressure Regulator and/or my Ignition Module (IM) A and B Bank? Please help. Thanks.