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: Service and Repair


Check the three way catalytic converter and the exhaust system every 15,000 miles for leaks, alignment and suspension. Check for loose parts in the catalytic converter by "shaking" the exhaust system. If loose parts can be detected, the converter should be replaced.