A buzzing type noise may be noted from upper engine area at about 1900 RPM, under light acceleration. Our technicians tell us this can be caused by loose ignition coil bracket bolts. Coil bracket bolts should be checked for the correct torque before further diagnoses is performed.Google+
Car Problem Reports
Ford Ranger Buzzing Type Noise From Upper Engine Area
Ford Ranger Problem
Engines Affected: 2.3L 4 Cylinder, 3.0L V6, 4.0L V6
Average Mileage: 113,333 mi (46,000 mi - 199,000 mi)
Visitor, 2003 Ford Ranger, 3.0L V6, 199,000 mi
A turbine type sound is heard when accelerating and also I believe even after I have reached speed.