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



Air flow sensor resistance:
6 & 9 200 - 400 ohms
6 & 8 130 - 260 ohms
8 & 9 70 - 140 ohms
7 & 8 100 - 500 ohms

6 & 7 40 to 500 ohms
Varies as flap is moved.

Intake Air Temperature sensor, Pins 6 and 27:
32°F (0°C) 5,000 - 6,500 Ohms
68°F (20°C) 2,000 - 3,000 Ohms
104°F (40°C) 1,000 - 1,500 Ohms
140°F (60°C) 500 - 675 Ohms
176°F (80°C) 275 - 375 Ohms
212°F (100°C) 150 - 250 Ohms