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.
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HOMESERVICE MANUALSCHEVROLET2007COBALT L4-2.2LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSAIR INJECTIONAIR INJECTION CHECK VALVESERVICE AND REPAIR
2007 Chevrolet Cobalt L4-2.2L
Air Injection Check Valve: Service and Repair
2007 Chevrolet Cobalt L4-2.2LSECTION Service and Repair
Secondary Air Injection Check Valve Replacement
Removal Procedure
1. Remove the intake manifold cover.
2. Disconnect the engine harness electrical connector from the secondary air injection (AIR) check valve.
3. Disconnect the AIR pump outlet hose quick connect fitting at the AIR check valve.
4. Remove the AIR check valve bolts.
5. Remove the AIR check.
6. Remove and discard the AIR check valve gasket.
7. Clean the check valve gasket mating surfaces.
Installation Procedure
1. Install a NEW AIR check valve gasket onto the exhaust manifold.
2. Install the AIR check.
Notice: Refer to Fastener Notice.
3. Install the AIR check valve bolts.
Tighten the bolts to 22 N.m (16 lb ft).
4. Connect the AIR pump outlet hose quick connect fitting at the AIR check valve.
5. Connect the engine harness electrical connector to the AIR check valve.
6. Install the intake manifold cover.
RENDER: 1.0x
NO RELATED
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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.