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 Geo Tracker LSi, RWDFACTORY OEM SERVICE PROCEDURE
Fast Idle Air (FIA) Valve
CAUTION:
DO NOT
allow water to contact any other portion of throttle body when immersing fast idle air valve in water.
- Fast idle air valve is bolted to throttle body. To check valve, ensure engine is cool. Turn ignition off. Disconnect Idle Air Control (IAC) valve harness connector. Start engine and ensure idle speed reduces gradually as engine coolant temperature rises. If operation is as specified, FIA valve is okay. If operation is not as specified, go to next step.
- Remove valve from throttle body. Inspect throttle body for clogged air and water passages. Repair as necessary. Immerse valve in water. When water temperature is less than 158°F (70°C), valve should be open. When water temperature is greater than 158°F (70°C), valve should be closed. Replace FIA valve if operation is not as specified. Install a NEW gasket when installing valve.
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.