I know this topic has been discussed many times, and I've spent a good amount of time reading through threads on the subject, but I can't seem to find the problem. 98 LC, 255K miles. My issue is only on cold starts and will disappear once the engine temp begins to rise. I have the classic rough idle/shutter that's typically related to ignition coils, but only when idling in gear or moving from a stop when the engine is cold. I don't have a CEL on, I have pulled each individual ignition coil while cold and running to check for a bad coil (I've tried while in park and while in gear), I just replaced all spark plugs less than 10K miles ago, I cleaned my throttle body, IAC valve, MAF sensor, and my air filter is spotless. Is there anything I'm missing? Would a code scanner locate the potential misfire without the CEL on and even though I've checked all my ignition coils and they all are functional? Thanks for any input.