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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Component Tests and General Diagnostics


NOTE: Set idle with Air-Conditioning unit turned OFF (unless otherwise specified on engine label).

Diesel Engines - Start engine and allow it to warm up to operating temperature. Connect tachometer following manufacturer's instructions. Adjust screw on injection pump to obtain specified slow idle.

1.8L (111) engine - Apply vacuum to fast idle actuator. Loosen locknut and adjust knurled nut to specification.

5.7L (350) engine - Turn ignition off and then attach jumper wire across fast idle switch connector terminals. Turn ignition on and adjust idle solenoid (energized) to obtain specified fast idle.