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.
1987 Toyota 4Runner SR5, 22-RTEFACTORY OEM SERVICE PROCEDURE
Pickup & 4RUNNER
- Warm engine to normal operating temperature. Increase and maintain engine speed at 2000 RPM. Unplug connectors at Electronic Air Control Valve (EACV) and at Electronic Bleed Control Valve (EBCV) and wait a few seconds. See Fig 2.
- Reconnect EBCV connector and ensure engine speed drops about 300 RPM. Disconnect and plug vacuum hose from vacuum switch. Ensure engine speed returns to 2000 RPM after a few seconds. Reconnect vacuum hose and connectors. If no problem is found, system is okay.
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.