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)

Or, hide this message: temporarily or permanently

Engine Hesitates or Poor Acceleration

POOR IDLING / HESITATES OR ACCELERATES POORLY

Check in the order shown
1. Clutch.
2. Brakes drag when released.
3. Fuel quality.
4. Exhaust gas recirculation system.
5. Spark plug.
6. Compression.
7. Throttle position sensor circuit.
8. Volume airflow sensor circuit.
9. Engine coolant temperature sensor circuit.
10. Intake air temperature sensor circuit.
11. Heated oxygen sensor circuit.
12. Fuel pressure regulator.
13. Fuel pump.
14. Fuel lines.
15. Ignition timing.
16. Injectors.
17. Engine control module.