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)

Or, hide this message: temporarily or permanently

Air Flow Meter/Sensor: Testing and Inspection


Fig. 26 Air Flow Meter Inspection:






1. Remove air flow meter.
2. Check meter body for cracks.
3. Check that measuring plate moves smoothly.
4 Disconnect air flow meter connector.


Air Flow Meter Test -- Open Position:




Airflow Meter Test Chart:






5. Move measuring plate and check for resistance between terminals as indicated on accompanying table.
6. Reinstall connector after checking.