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 MANUALSVOLKSWAGEN1999GTI (1W1) V6-2.8L (AAA)REPAIR AND DIAGNOSISDIAGRAMSEXPLODED VIEWSAIR INJECTION
1999 Volkswagen GTI (1W1) V6-2.8L (AAA)
Air Injection
1999 Volkswagen GTI (1W1) V6-2.8L (AAA)SECTION Air Injection
NOTE: The Secondary Air Injection System pump motor is located under the intake manifold.
1 - Secondary Air Injection (AIR) Pump Motor V101
2 - Lifting eye
^ On left of cylinder head
3 - Bracket
^ for secondary air injection pump motor V101, and secondary
air injection solenoid valve N112
4 - 25 Nm (18 ft lb)
5 - Connector
^ 2-pin
6 - 10 Nm (7 ft lb)
7 - Secondary Air Injection (AIR) Solenoid Valve N112
^ mounted to bracket
8 - Vacuum hose
^ to upper intake manifold or collective vacuum collection
9 - Vacuum hose
^ from secondary air injection solenoid valve to secondary
air injection inlet valve
10 - Intake hose
11 - Pressure hose
^ make sure hose is seated securely
12 - To Air Cleaner (ACL)
13 - Secondary Air Injection (AIR) Inlet Valve
14 - 15 Nm (11 ft lb)
15 - O-ring
^ always replace
16 - Air port
^ In cylinder head
1 - Secondary Air Injection (AIR) Pump Motor V101
2 - Lifting eye
^ On left of cylinder head
3 - Bracket
^ for secondary air injection pump motor V101, and secondary
air injection solenoid valve N112
4 - 25 Nm (18 ft lb)
5 - Connector
^ 2-pin
6 - 10 Nm (7 ft lb)
7 - Secondary Air Injection (AIR) Solenoid Valve N112
^ mounted to bracket
8 - Vacuum hose
^ to upper intake manifold or collective vacuum collection
9 - Vacuum hose
^ from secondary air injection solenoid valve to secondary
air injection inlet valve
10 - Intake hose
11 - Pressure hose
^ make sure hose is seated securely
12 - To Air Cleaner (ACL)
13 - Secondary Air Injection (AIR) Inlet Valve
14 - 15 Nm (11 ft lb)
15 - O-ring
^ always replace
16 - Air port
^ In cylinder head
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.