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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Idle Speed: Testing and Inspection

IDLE SPEED / INSPECTION







1. Shift to neutral or (P) and start the engine. Hold the engine at 3,000 rpm with no load until the radiator fan comes on, then let it idle.
2. Connect a tachometer to the test tachometer connector.

Idle speed
Except VTEC
M/T: 750 ± 50 rpm in neutral
A/T: 750 ± 50 rpm in (N) or (P)

VTEC
800 ± 50 rpm in neutral


NOTE: All electrical systems should be turned OFF.

3. Adjust the idle speed if necessary.