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.
ISB Idle Speed Control. All engines spend a significant portion of their life at idle. The ISB engine gives you the ability to set desired idle speed. It also gives you the ability to control idle speed using the Cruise Control switches. Idle Speed Control increases fuel economy and can be helpful in reducing cab noise and vibration. Idle time also affects fuel economy of the vehicle.