I own a 2002 Lexus sc430. It has 135,000 miles on it. Started missing a few months back and the check engine light and VSC light came on. I had the VSC light fixed at a dealership last year solved the stalling issue. But it came back on along w/ the check engine light and starting missing. Had it scanned and they said mis fire on 4 and 6 cyclinder. Bought all new plugs and coil packs and replaced those. Cleared codes and lights off for one day. VSC light and check engine light back on and starting missing again. I am at wits end and dont know what to do. Do yall suggest I have it scanned again? TYNA!!!!