After fixing ruining problems, car was running great for a few months and then suddenly for no known reason it quit while going down the freeway, no check engine light, has a new cam sensor, crank sensor, map sensor and iac valve, and coil pack which had warranty so thinking that was it I replaced it again, still only getting spark in cylinders 1&4, did my computer go bad, don't have the $200 the dealership wants to hook it up, I've done everything including check wiring any advise would be greatly appreciated.