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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Emission Control Systems


IGNITION TIMING

Basic 5° +/- 2° BTDC @ Curb Idle
Actual 15° BTDC @ Curb Idle

RESISTANCE VALUES

EGR Control Solenoid Valve 36-44 ohms
EGR Temperature Sensor
Below 50°C (122°F) 60-83k ohms
Above 100°C (212°F) 11-14k ohms
Purge Control Solenoid Valve 36-44 ohms