FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
:
Car repair manuals for everyone.
Home
>>
Chevy Truck
>>
1999
>>
Express 1 Ton Van V8-5.7L VIN R
>>
Repair and Diagnosis
>>
Powertrain Management
>>
Computers and Control Systems
>>
Testing and Inspection
>>
Scan Tool Testing and Procedures
>>
Scan Tool Data, Normal Values and Definitions
>>
Scan Tool Data Definitions - Powertrain Systems
>>
AIR Fuel Ratio
AIR Fuel Ratio
Range (0.0:1-25.5:1)
The scan tool indicates the
VCM
calculated air to fuel ratio. The typical air to fuel ratio is 14.7:1.