It is for more than no starts. Once you have troubleshot everything else and replaced what you need to replace and that doesnt work, this is another cheap fix to try. It will cost roughly $700 to replace a PCM with the dealer, it will cost less than $4 to fix it yourself with parts from radio shack. We had this issue (without knowing it) We replaced the fuel pump and filter, the ignition coil, the CPS, all of the relays and several fuses(roughly $600) before trying this fix. We found a few threads related to PCM probs before we found the fix from Gomes512. The probs described by others were indentical to ours. We had no CEL light at all, even after replacing the CPS. We figured why not and gave his write up a shot, she started right up and has been fine ever since.so why would you do this? is it basically just for no-starts ?