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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Alternator Noisy

1. Ensure drive belts is installed properly and not damaged.
2. Ensure alternator and mounting bracket are properly aligned and mounted.
3. Ensure pulley is not bent or misaligned.
4. Replace alternator with known good alternator.
5. If noise is still present, install original alternator and check other accessories to find noise source.