1994 Toyota Land CruiserFACTORY OEM SERVICE PROCEDURE

Throttle Opener

  1. Warm engine to normal operating temperature. Ensure idle speed is correct. See IDLE SPEED & MIXTURE in ADJUSTMENTS article.
  2. Disconnect and plug vacuum hose at throttle opener, located on side of throttle body. Start engine and note engine speed. Engine speed should be within specification. See THROTTLE OPENER SPECIFICATIONSΒ  table.
  3. If engine speed is not within specification, replace throttle body. Reinstall vacuum hose on throttle opener. Start engine and ensure engine returns to proper idle speed.
Fig 1: Adjusting Throttle Opener (Similar)
G93I80547Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
THROTTLE OPENER SPECIFICATIONS

Application (1) RPM
Land Cruiser 700-1000
(1) With electric cooling fan turned off (if equipped).
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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