Ranger 2WD L4-153 2.5L SOHC VIN C SFI (1998)
Drive/Propeller Shaft: Initial Inspection and Diagnostic Overview
Question the Customer
The preliminary diagnosis starts with the customer interview. The history of the concern must be investigated: When was it first noticed? Did it appear
suddenly or gradually? Did any abnormal occurrence coincide with or precede its appearance (such as pothole or curb impacts, minor collisions, etc.)?
Were any repair procedures performed or parts replaced? It is also necessary to know any special conditions affecting the appearance and degree of
the concern, such as road speed, type of road, drive mode, engine temperature, ambient temperature, etc.
A gradual appearance of the concern indicates a deterioration of a component, such as tires, halfshafts or front wheel bearings.
A sudden appearance of the concern could indicate a lost wheel balance weight or frozen Constant Velocity (CV) joint.
Road Test
A road test is mandatory for any customer concern of noise/vibration that is not verified by the on-hoist check of chassis components. The Vehicle
Road Test Evaluation form is arranged to record the conditions heard or felt during this test.