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1988
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Medallion LX, Standard
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MPFI System
MPFI System
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Description
Operation
Notes
Ecu Input Sensors
Air Conditioning Select Signal
Air Temperature Sensor
Battery Voltage Signal
Coolant Temperature Sensor
Engine Crank Signal (A/T Only)
Engine Speed Sensor
Gear Indicator Signal (A/T Only)
Knock Sensor
Manifold Absolute Pressure (MAP) Sensor
Oxygen (O2) Sensor
Throttle Position Switch (TPS)
Ecu Output Controlled Components
"B +" Relay
EGR/Canister Purge Solenoid
Fuel Injectors
Fuel Pump Relay
Ignition Power Module
Idle Speed Regulating Valve
Upshift Indicator Light (M/T Only)
Trouble Shooting
Notes
Engine Starting
Engine No Start or Hard Start
Engine Starts & Stalls
Incorrect Idle Speed
Idle Speed Too High
Idle Speed Too Low
Rough Idle
Poor Engine Performance
Excessive Fuel Consumption
Loss of Power
Misfiring at All Speeds
Poor Acceleration
Spark Knock
Component Testing
Air Temperature Sensor
Coolant Temperature Sensor
Engine Speed Sensor
Fuel Pump
Fuel Pump Pressure
Fuel Pump Volume
Fuel Injectors
Injector Test with Engine Stopped
Injector Test with Engine Running
Idle Speed Regulator
Electrical Testing
Map Sensor
Inspection
Electrical Circuit
Throttle Position Switch (TPS)
Wiring Diagrams