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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S5 - Check Vacuum Lines



- Check vacuum lines for proper routing.

- Check Manifold Absolute Pressure (MAP) sensor vacuum line for holes, disconnections, kinks or blockage.

- Are vacuum lines OK?

Yes -- Go to S6. S6 - Check MAP Sensor

No -- Service vacuum lines as necessary. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)