...its the computer but i dont know? i took it to a shop and he did a dianostic and said my ignition module was bad so i replaced it . he guaranteed 99.9% it wont shut off when im driving. it cost me 3.00 well 3 days later it shut off the same problem happened again i toook it back to him and he did another dianostic and said my security system was bad and maybe my computer module . what should i do now?