This vehicle has electronic engine speed limiting. The engine limited speed is approximately is 2,900 rpm.
This system controls maximum vehicle speed automatically and reduces engine power until vehicle speed gets down to maximum governed speed.
Most models have a default setting of 75 mph (120 km/h), although some tire sizes and tread patterns may limit maximum speed to 55 to 65 mph (86 to 105 km/h). You may have a label on the headliner of your vehicle with more information on your engine road speed governor. See your Isuzu dealer for assistance with programming your engine limited speed.