Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Air Flow Meter/Sensor: Service and Repair




1. Remove air flow meter connector, air hose, secondary air hose, vacuum hoses for air control valve and duty solenoid valve, accelerator cable bracket and the air cleaner upper case.
2. Remove air flow meter and the rubber seal.
3. Install new sealing rubber and the air flow meter to air cleaner upper case.
4. Install upper case assembly and the removed parts in reverse order of removal.
5. Warm up engine and run at idle for 15 minutes.
6. Check idle speed and adjust as necessary.