A4 Quattro Wagon V6-2.8L (AHA) (1998)
Air Flow Meter/Sensor: All Technical Service Bulletins
Work Procedure
Open hood and remove cover from air cleaner
Section A
Check Material Of Mass Air Flow Sensor (MAS)
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If MAS is aluminum, NO FURTHER WORK IS NECESSARY; reinstall cover on air cleaner and close hood
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If MAS is plastic, proceed to Section B
Section B
Check Screen In MAS
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Switch ignition to "OFF" position
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Loosen clamps -5- on air hose -6- between MAS -4- and intake air duct -10- and remove air hose
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Disconnect electrical connector from MAS
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Disconnect and remove tie wrap -1- from metal bracket -8-
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Remove 4 bolts -7- securing MAS, then remove MAS
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With MAS removed, check screen installation inside MAS.
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If adhesive is present at the outer edge, (metal frame around screen is covered with adhesive) proceed to Section D