few days back i experienced sudden decceleration in my car. later on i came to know that two cylinders were not getting ignition. once you switch off and restart things become normal but then again it gave problem after fifteen minutes or so. we found shot wires. we replaced them. the mechanic asked me to repolace computer which i did. but even then the problem reappeared. in the first check computer did not show any problem just indicated the fault. but problem reappeared after a drive of one hour. can any one help me.