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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Idle Speed Fluctuates (MIL Works OK, No DTCs Set)

Idle speed fluctuates(MIL works OK, no DTCs set)

Idle speed fluctuates
(MIL works OK, no DTCs set)

Do the PCM idle learn procedure PCM Idle Learn Procedure.

Check the idle speed Testing and Inspection.

Do the carbon accumulation check.

Troubleshoot the A/C signal circuit A/C Signal Circuit Troubleshooting.

Also check for

Incorrect valve timing or clearance adjustment

Also check for

Intake air leaks