Thanks for the recommendations guys... I'll check them out next weekend and report back. As far as cooling goes, it was doing this with both thermostats I had in... the first one seemed to be always open and had a hard time getting warmer than 150 to 160. I posted a question about the new one . It's a 195 and the temp seems to cycle between 180 and 195 on my gauge (195 and 210 on the scanner - different sensors). Anyway, cooling probably is not it.

Fuel pressure regulator leak could be it... I'll chase that down. I may also try a chip from the other guys if I get desperate.