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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Engine Controls - On-Vehicle Adjustments - V6 & V8) >> Idle Speed & Mixture >> V6 >> 4Runner

Idle Speed & Mixture: V6: 4Runner

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tundra, 2002 Toyota Tacoma, 2002 Toyota Sienna, 2002 Toyota Sequoia, and 2002 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. Idle speed is controlled by Engine Control Module (ECM) and is not adjustable. Check idle speed with air cleaner and all air intake hoses installed, all vacuum lines connected, electronic fuel injection system wiring connectors properly installed, transmission in Neutral, ignition timing properly set, A/C and all accessories off, and engine at normal operating temperature.
  2. Start engine and warm engine to normal operating temperature. Shut engine off. Connect Toyota hand-held tester or scan tool to data link connector No. 3 at driver's side of instrument panel. See Figure. Hand-held tester or scan tool is used to read engine RPM.
  3. Apply parking brake. Place transmission in Neutral. Start engine and maintain engine at 1000 RPM for 5 seconds and then allow engine to idle. Ensure idle speed is 650-750 RPM. If idle speed is not within specification, check air intake system. If air intake system is okay, check throttle body. See IDLE CONTROL SYSTEMS in SYSTEM & COMPONENT TESTING - V6 & V8 article. Shut engine off. Remove hand-held tester or scan tool.
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