Southern Alaska has had: (M1.5 or greater) 1  9 earthquakes in the past 24 hours. 2  54 earthquakes in the past 7 days. 3  294 earthquakes in the past 30 days. 4  5,169 earthquakes in the past 365 days.
An engines idle speed is a programmed function. We cannot directly adjust the engine idle speed on a modern vehicle. The power control module or PCM provides all adjustments to the idle speed. Though no external engine idle speed adjustments are possible, many things can and do cause problems.
When an engine is idling, it means that it is under no load (apart from its own internal friction of mechanics, i.e. the crankshaft etc.). Otherwise the engine is doing no work. A this point, making an engine idle is quite difficult and this idle speed needs to be controlled otherwise it will simply stall. On modern engines with a EMU (Engine Management Unit), a idle speed control valve (ISCV) is utilised to do this task.