benny ... 3/28/2010
2000 Ford Ranger XL 6 Cyl 3.0L
the engine idle at 1100 rpm, cannot not adjust
Assuming that there are no fault codes stored, replacing the idle air control and cleaning the throttle body with throttle body cleaner and a toothbrush will likely solve the idle speed problem. I also assume that you did not disturb the throttle return control screw setting.