[carmine]

Dblvenom, It cools down because your coolent is being circulated through the block by the water pump and your fans are sending cool air around the block thus cooling it down. Once moving at cruising speed your fans can probably be turned off and the air flow thru the cool rad and on to your engine is enough to keep your car at operating temp. In other words i experianced everything your discribing and changed and checked everything youve done and it turned out to be a faulty thermostat.