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Sterling
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1988
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825 S, 2.5 D
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Repair and Diagnosis
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Engine Performance
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Testing & Diagnosis
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Electronic Control System
Electronic Control System
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Description & Operation
Notes
Input Signals
Atmospheric Pressure (PA) Sensor
Battery Voltage Signal
Crank Angle Sensors
Coolant Temperature (TW) Sensor
EGR Position Sensor
Idle Mixture Adjuster (IMA) Sensor
Intake Air Temperature (TA) Sensor
Manifold Air Pressure (MAP) Sensor
Oxygen Sensor
Throttle Position Sensor
Control Devices
EGR Control Solenoid
Electronic Air Control Valve (EACV)
Fast Idle Valve
Fuel Injector
Fuel Pump
Ignition Control Solenoid Valves
Lock-Up Solenoid Valve
Main Relay
Pressure Regulator Cut-Off Valve
Warning Light
Red ECU LED
Trouble Shooting
Notes
Engine Won't Start
Difficult Cold Start
Fast Idle Out Of Specifications
Rough Idle When Warm
Idle Rpm High When Warm
Idle Rpm Low When Warm
Stalling During Warm Up
Stalling After Warm Up
Misfire Or Rough Operation
Emission Test Failure
Lack Of Power
Testing
Notes
Self-Diagnostic Codes