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.
Air Injection System: Description
All models are fuel injected and use an oxygen sensor and feedback system to reduce emissions. The air injection system works with the feedback system to reduce exhaust emissions and improve driveability.
System consists of an air pump, relief valve, diverter valve, air filter, check valve, delay valve, 2 thermal vacuum valves and connecting hoses. The air is injected through ports in cylinder head. The air injection relay is located behind glove box, underneath instrument panel.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.