Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2005 honda civic Rough Idle or Engine Misfire. Get step-by-step fixes, cost estimates, and professional advice.

Expert Repair Solutions

medium$150-$300

Replace faulty ignition coils and spark plugs to resolve misfire issues.

Source: https://www.justanswer.com/honda/qkisj-2005-honda-civic-misfire-cylinders-honda-civic-check.html

Repair Steps:

Purchase new ignition coils and spark plugs.
Remove the engine cover to access the ignition coils.
Disconnect the electrical connectors from the ignition coils.
Remove the old ignition coils and spark plugs.
Install the new spark plugs and ignition coils.
Reconnect the electrical connectors and replace the engine cover.

medium$50-$100

Clean or replace the Idle Air Control Valve (IACV) to fix rough idle.

Source: https://www.youtube.com/watch?v=5YfIiOmuzFQ

Repair Steps:

Locate the IACV on the throttle body.
Disconnect the electrical connector from the IACV.
Remove the screws securing the IACV to the throttle body.
Clean the IACV with throttle body cleaner.
Reinstall the IACV and reconnect the electrical connector.

hard$100-$200

Inspect and clean fuel injectors to improve fuel delivery and resolve misfires.

Source: https://www.civicforums.com/forums/36-mechanical-problems-vehicle-issues-fix-forum/369956-d17a1-misfire-rough-idle-high-compression.html

Repair Steps:

Remove the fuel rail to access the fuel injectors.
Disconnect the electrical connectors and fuel lines from the injectors.
Remove the injectors from the engine.
Clean the injectors using a fuel injector cleaning kit.
Reinstall the injectors, reconnect the electrical connectors and fuel lines.
Reattach the fuel rail and test the engine for improvements.

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