1991 LEXUS SC400 Service Repair Manual

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Page 1897 of 4087

LEXUS SC400 1991 Service Repair Manual INSTALLATION OF FUEL PRESSURE PULSATION DAMPER (See Components on page FI±58) 1. INSTALL FUEL PRESSURE PULSATION DAMPER Using SST, install two new gaskets, the inlet hose and pulsa- tion damper. SS

Page 1898 of 4087

LEXUS SC400 1991 Service Repair Manual Fuel Tank and Lines COMPONENTS FI±61 ± Fuel System (Fuel Tank and Lines)EFI SYSTEM WhereEverybodyKnowsYourName

Page 1899 of 4087

LEXUS SC400 1991 Service Repair Manual PRECAUTIONS 1. Always use new gaskets when replacing the fuel tank orcomponent part. 2. Apply the proper torque to all parts tightened. INSPECTION OF FUEL LINES AND CONNECTIONS (a) Inspect the fue

Page 1900 of 4087

LEXUS SC400 1991 Service Repair Manual AIR INDUCTION SYSTEM Air Flow Meter ON±VEHICLE INSPECTION INSPECT RESISTANCE OF AIR FLOW METER(a) Disconnect the air flow meter connector. (b) Using an ohmmeter, measure the resistance betweenterm

Page 1901 of 4087

LEXUS SC400 1991 Service Repair Manual COMPONENTS REMOVAL OF AIR FLOW METER 1. DISCONNECT CABLE FROM NEGATIVE TERMINAL OFBATTERY CAUTION: Work must be started after approx. 20 se- conds or longer from the time the ignition switch is turn

Page 1902 of 4087

LEXUS SC400 1991 Service Repair Manual 4. REMOVE AIR FLOW METER FROM AIR CLEANER CASERemove the four bolts and air flow meter and gasket. INSPECTION OF AIR FLOW METER INSPECT AIR FLOW METERCheck that the honey±combed is neither deformed

Page 1903 of 4087

LEXUS SC400 1991 Service Repair Manual EFI Main Relay INSPECTION OF EFI MAIN RELAY 1. REMOVE EFI MAIN RELAY FROM RELAY BOX IN ENGINE COMPARTMENT 2. INSPECT EFI MAIN RELAY A. Inspect relay continuity (a) Using an ohmmeter, check that the

Page 1904 of 4087

LEXUS SC400 1991 Service Repair Manual VSV for EVAP INSPECTION OF VSV FOR EVAP (See Emission Control System on page EC±8) VSV for EGR INSPECTION OF VSV FOR EGR (See Emission Control Systems on page EC±13) VSV for ACIS INSPECTION OF VSV
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