LEMON Manuals: Even more car manuals for everyone
Home >> Isuzu >> 1991 >> Rodeo LS, RWD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - EFI >> Fuel System >> Fuel Control >> Fuel-Cut (Slow-Cut) System (2.6L)

Fuel-Cut (Slow-Cut) System (2.6L)

  1. Warm engine to operating temperature. Turn ignition off. Unplug throttle valve switch wire connector.
    NOTE: Throttle valve switch and throttle position sensor are mounted on throttle body throttle shaft. M/T models use throttle valve switch. A/T models use throttle position sensor and throttle valve switch.
  2. Insert a fine wire into upper (idle) terminal. Reconnect throttle valve switch connector with fine wire partially pulled outward. See Fig 1 .
    Fig 1: Installing Wire In Throttle Valve Switch (2.6L)
    G122373Courtesy of ISUZU MOTOR CO.
  3. Start engine, and operate at 2000-2500 RPM. Connect battery voltage to fine wire installed on throttle valve switch. When battery voltage is applied, engine speed should decrease to approximately 1250 RPM. Engine surging may occur, which is normal during test procedure.
NOTE: Fuel cut-off and fuel injection reactivation is controlled by throttle valve switch. See FUEL-CUT SPECIFICATIONS  table for fuel-cut operating conditions.
FUEL-CUT SPECIFICATIONS

Test Condition Speed (MPH) Engine (RPM) Idle Contact
Fuel-Cut 15 or More 1700 or More On
Fuel-Cut 0 1700 or More On
Injection 6 or Less 1250 or Less Off