This mornin i got a little shudder that i mistook for a miss...i didnt catch what was going on but i got it again this evening. When she is cold im drivin through my neighborhood and @abt 25-30mph in 2nd gear? @ realy low rpms im getting this quick agressive shudder. i was hoping whatever it is may be help me pinpoint what my codes were comming from before. when she warmed up i pressed her a little bit to see if i could get the cel to pop up, but i couldnt . any thoughts?