Hey thanks for the input. I am going to check the purge solenoid tomorrow. The car has no driveability problems and I am not too worried about the small things, this car has 239,000 miles. My main concern with all of this was the missfiring after the car sits in a rain or moisture. My next concern is gas mileage. I also have a turn signal problem that I read will get worse and I am not up to pulling the column and airbag to change the switch... but thats another story.
I just ordered one of the scanners from amazon and will clear all the codes out when I get it. Like I said the car runs great most of the time. It is only when it sits for a few days and those misty rainy days fall then it acts up till the engine is warm again.
The emissions codes are tough to figure out sometimes. How concerned should I be with a cat not performing? I care about the environment but not enough to shell out some big bucks.. Thanks again.