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 MANUALSSUBARU1998LEGACY OUTBACK SPORT AWD F4-2.2L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSSENSORS AND SWITCHES - COMPUTERS AND CONTROL SYSTEMSAIR FLOW METER/SENSORSERVICE AND REPAIR
1998 Subaru Legacy Outback Sport AWD F4-2.2L SOHC
Air Flow Meter/Sensor: Service and Repair
1998 Subaru Legacy Outback Sport AWD F4-2.2L SOHCSECTION Service and Repair
MASS AIR FLOW SENSOR
REMOVAL AND INSTALLATION
1) Loosen clamps which connect air intake duct to air intake chamber and mass air flow sensor.
2) Disconnect blow-by hose from air intake duct.
3) Remove air intake duct.
4) Disconnect connector from mass air flow sensor.
5) Remove two clips, then remove air cleaner upper cover.
6) Remove mass air flow sensor from air cleaner upper cover.
7) Installation is in the reverse order of removal.
Tightening torque: 7.4 ± 2.0 Nm (0.75 ± 0.2 kg-m, 5.4 ± 1.4 ft-lb)
CAUTION: Before installing air cleaner upper cover, align holes with protruding portions of air cleaner lower case, then secure upper cover to lower case.
REMOVAL AND INSTALLATION
1) Loosen clamps which connect air intake duct to air intake chamber and mass air flow sensor.
2) Disconnect blow-by hose from air intake duct.
3) Remove air intake duct.
4) Disconnect connector from mass air flow sensor.
5) Remove two clips, then remove air cleaner upper cover.
6) Remove mass air flow sensor from air cleaner upper cover.
7) Installation is in the reverse order of removal.
Tightening torque: 7.4 ± 2.0 Nm (0.75 ± 0.2 kg-m, 5.4 ± 1.4 ft-lb)
CAUTION: Before installing air cleaner upper cover, align holes with protruding portions of air cleaner lower case, then secure upper cover to lower case.
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.