my basic problem is fast idle when warm. i have checked the eha, the ovp relay, replaced all associated hoses, soaked the idle control overnight and lubed with wd40. as best i can tell the rotary idle control never moves. i connected 12v directly to it and the engine raced. the voltage at the connector rises as the engine warms but no current flows. i only asked about the altitude thing because i didn't know what it was . do i have a computer problem or is there something else in the curcuit i need to check? thans for your input!