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.
1988 Toyota 4Runner Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Air Suction System: Inspection: Tercel
- Check condition of all hoses and tubes. On Federal models, disconnect air suction hose from air cleaner cap. Start engine. With engine idling, check that a bubbling noise is heard from end of hose.
- On California models, disconnect and plug vacuum hose from shutoff valve. Disconnect air suction hose from air cleaner cap. Start engine. With engine idling, check that a bubbling noise is heard from end of hose.
- Reconnect air suction hose to air cleaner cap. Reconnect vacuum hose to shutoff valve and check that a bubbling noise is heard from valve inlet within 2-6 seconds.
Factory Service Tools
Use the Manual With the Right Hardware
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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.