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1988
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Sprint Metro, Automatic
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Feedback Carburetor System
Feedback Carburetor System
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Description
Operation
FBC System
Electronic Control Module (ECM)
Input Sensors
Clutch Switch (M/T Only)
Coolant Temperature Sensor (CTS)
Engine Speed Sensor
Intake Air Temperature Sensor (ATS)
Oxygen (O2) Sensor
Idle & Wide Open Throttle (WOT) Microswitches
Vehicle Speed Sensor (VSS)
Electric Load Sensing (M/T Only)
ECM Controlled Devices
Fuel Mixture Solenoid
3-Way Solenoid Valve (TWSV)
Fuel Evaporative Solenoid
Fuel-Cut System
Trouble Shooting & Diagnosis
Preliminary Checks
Diagnosis By System
Hard Or No Start (Engine Cranks)
Rough Idle Or Engine Stalling
Loss Of Power Or Surges At Highway Speed
FBC System Check
Testing
Component Testing
Idle Microswitch
Wide Open Throttle Microswitch
Mixture Control Solenoid Valve (MCSV)
Coolant Temperature Sensor (CTS)
Intake Air Temperature Sensor (ATS)
Vehicle Speed Sensor (VSS)
Oxygen (O2) Sensor
3-Way Solenoid Valve (TWSV)
System Control Testing
Fuel-Cut System
Secondary Air Control System
ECM Ground Circuits Check
ECM Power Circuits Check
Sensor Checking
Oxygen (O2) Sensor Signal Check