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: Specifications

MAF PID Voltages:
Ignition Switch ON 0 Volts
Hot Idle 0.9 Volts
Driving 48 km/h (30 mph) 0.8-1.6 Volts
Driving 88 km/h (55 mph) 1.8-2.5 Volts