Every once in a while wehn i will start up my 93Z it will act like its loading up and running really rich. It idles around 400 to 500. Today it happened again and it died a couple times then i started driving and gave it hell through a couple gears and it was fine till i pulled up to the stop sign and again it started idling real low and all. But once you get goin its like nothing was ever wrong with it the performance isnt hurt any at all. Its not throwing any codes. It only does this every once in a while but most of the time it starts right up and runs perfect. This is my DD. Anyone got any ideas whats wrong?

 

no one has any ideas