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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Flow of Diagnosis

Flow of Diagnosis:





1 Get accurate description of complaint. Road test the vehicle to verify condition. Perform underhood inspection.
VISUALLY CHECK:
Vacuum hoses for splits, kinks and proper routing.
Ignition for cracking, hardness and proper connections at both the distributor and the spark plugs.
All wiring for proper connections, pinches and cuts.
Wiring harness for proper routing.
Check for missing components.
2 Check TSB'S for intermittents, updated diagnostic procedures, warranty and recall information.
3 See DIAGNOSIS BY SYMPTOM - EMISSION RELATED under TESTING PROCEDURES for symptom vehicle is exhibiting. Follow the procedures as outlined for given symptom.