I have to agree with most...RCM... is either dead at start up...no cranks or dies say at a stop sign, and needs some time to cool down, and will usually re-start.
The CPS can do the following as I have had this problem. It can turn over and try to start idle very rough and die. It will usually just turn over and not start.
The Skreem is one that is hard to nail down. Act like a CPS at first but eventually after 3 tries will not turn over acting like the RCM. You have to unplug the battery cable for a re=boot so to speak, and you get 3 more tries. At least that is how I have heard it explained. I have not had this problem yet.