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: Testing and Inspection

Airflow Meter Testing:

1. Remove airflow meter.
2. Check meter body for cracks or other damage.
3. Ensure that measuring plate moves smoothly.
4. Move measuring plate and check resistance between terminals as indicated on image chart.
5. Intake air thermosensor resistance measurement does not require measuring plate movement.
6. Replace airflow meter if body is damaged, measuring plate does not move smoothly or it does not meet specifications.