Ranger 2WD V6-245 4.0L VIN X SFI (1997)
Air/Fuel Mixture: Testing and Inspection
The technician should be aware that diagnosis and testing of the Air/Fuel mixture system should begin at the Powertrain Management level, where
testing begins with "general" symptom diagnosis, and is narrowed to testing of a "specific" subsystem and it's related wiring and components. Following
the appropriate diagnostic routines may prevent misdiagnosis and unnecessary component replacement. Refer to Powertrain Management/Testing and
Inspection/Procedures.
