ok, on cold starts, my egine rpm's will go up as normal, then come back down to normal, but then the rpm's will go up and down about 150-200rpm's, once i drive and get the engine to the normal temp, the rpm's is still a bit irratic but only about 50rpm's up and down.( 4.6l 3v-vortech V3 S trim-has very good tune on it-36k on it.)
Anybody possibly know whats going on ?

 

bump.