Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1997 Toyota Land CruiserFACTORY OEM SERVICE PROCEDURE
Dashpot Control System
- Warm engine to normal operating temperature. Ensure idle speed is within specification. See IDLE SPEED & MIXTURE in ADJUSTMENTS article.
- With engine idling, open throttle valve on throttle body until throttle lever separates from end of dashpot. Dashpot is located on throttle body, just below the throttle cables. See Fig 1. Gradually release throttle valve and note dashpot setting RPM when throttle lever contacts dashpot.
- Dashpot setting RPM should be 1900-2500 RPM. If dashpot setting RPM is not within specification, shut engine off. Loosen lock nut and rotate stopper bolt. See Fig 1.
- Repeat step 2) until proper adjustment is obtained. Tighten lock nut. To check throttle body Vacuum Transmitting Valve (VTV) operation, operate engine at 3500 RPM. Release throttle. Ensure engine returns to proper idle speed in a few seconds.
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:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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