1. My Saturn revs very high on initial start-up (to more than 2500 rpm),\nthen slowly comes down to idle speed in 5-10 seconds. It seems more\nnoticeable when engine was cold, but also happens with hot engine. I\nserviced cooling system and replaced CTS (had cracked bulb and gauge on\ninstrument panel only went to 1/4 mark...now falls slightly above 1/4\nmark). Obviously doing this service did not correct the condition. I\nthink the high-revving like this can be hard on the battery, among other\nthings.\n\n2. More minor: I know how to reset the lock code on the radio after\ndisconnecting the battery, but have never learned to set the clock time.\nWhat combination of buttons does one push to set clock time?