Ford Ranger/Explorer/Mountaineer 1991-1999

Idle Speed and Mixture Adjustments


The engines covered by this information utilize sophisticated multi-port fuel injection systems in which an engine control computer utilizes information from various sensors to control idle speed and air fuel mixtures. No periodic adjustments are either necessary or possible on these systems. If a problem is suspected, please refer to Sections 4 and 5 of this information guide for more information on electronic engine controls and fuel injection.