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 Intake System Description: Notes
The air induction system draws outside air into the combustion chamber. The intake air flows through a forward mounted duct and into the air cleaner assembly. The intake air passes out of the air cleaner assembly, through the mass air flow sensor and inlet duct, to the throttle body. The throttle body houses a throttle valve that controls the volume of air entering the intake manifold. A metered amount of air also enters the intake manifold through the idle air bypass passage that is controlled by the idle air control (IAC) valve. From the throttle body the intake air flows into the intake collector and is then distributed to the bank 1 and the bank 2 cylinders through the intake manifold. The intake air is mixed with fuel from the fuel injectors at the entrance to the combustion chamber.
An air filter element (2) is incorporated into the air cleaner assembly (1) in order to prevent dirt from entering the engine. The following components are directly or indirectly a part of the air supply system.
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.
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