I have new plugs, wires , fuel pump, the previous owner had spent 1500 on tune ups and no codes show up. Is the security system able to keep the car from start ing? The car did not have any problems and suddently stopped starting. Does the group have technical review assistance or is the info available in members past questions? 1998 xk8 con 113k, I love my car , the only Jag I have bought with working air.