solution to why my car stalls on the freeway at 70 mph. on 1998 Jaguar XJ8

replaced fuel pressure regulator and filter

Asked by for the 1998 Jaguar XJ8
What other symptoms , and did you actually test the fuel pressure before replacing parts?
1 more answer
Sounds like your computer needs to be reprogrammed. This should
have been done by the dealer under a recall they issued.