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)

Or, hide this message: temporarily or permanently

When The Engine Is Cold, Idle Speed Fluctuates

When the engine is cold, idle speed fluctuates

Troubleshoot the injector control module circuit Injector Control Module Circuit Troubleshooting.

Replace the fuel filter A element Fuel Filter A Element Replacement.

Replace the fuel filter B element Fuel Filter B Element Replacement.

Troubleshoot the alternator FR signal circuit Alternator FR Signal Circuit Troubleshooting.

Inspect the PCV valve Testing and Inspection.

Also check for

Clogged injector