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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Deceleration Control System




1. Warm engine to normal operating temperature and run at idle.
2. Disconnect neutral switch (man. trans.) or inhibitor switch (auto. trans.) connector.
3. Disconnect air hose from idle-up solenoid for electrical load and plug hose.
4. Place finger over port of solenoid.
5. Increase engine speed to 3000 RPM.
6. Decrease engine speed and ensure air is sucked in at 1500---2300 RPM.