I had the same issue a few months ago. It gets rather annoying when you get paranoid at every stop. At first mine would start back up, but then it got to the point were it wouldn't at times. I was stranded in an intersection for a good 5 minuets before it cranked back up. No CEL were thrown for me either.

I would first do what Mrmiata said and check the solder points. If that's not the problem then replace the CPS. I bought one from ebay for $15 and it has been working well so far.