Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2015 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 to resolve misfire issues.

Source: https://www.facebook.com/groups/talkbedford/posts/2331503147206554/

Repair Steps:

Identify the faulty ignition coil using a diagnostic tool
Remove the engine cover to access the ignition coils
Disconnect the electrical connector from the faulty coil
Unscrew and remove the faulty ignition coil
Install the new ignition coil and reconnect the electrical connector
Reattach the engine cover

easy$60-$120

Replace worn spark plugs to improve engine idle and performance.

Source: https://repairpal.com/honda/civic/2015/rough-idle

Repair Steps:

Remove the engine cover to access the spark plugs
Use a spark plug socket to remove the old spark plugs
Inspect the old spark plugs for wear or damage
Install new spark plugs, ensuring they are properly gapped
Reattach the engine cover

medium$100-$200

Check and repair vacuum leaks to stabilize engine idle.

Source: https://www.youtube.com/watch?v=SFeP4jpJox0

Repair Steps:

Inspect vacuum hoses for cracks or disconnections
Use a smoke machine to detect hard-to-find leaks
Replace any damaged vacuum hoses
Re-test the system to ensure the leak is resolved

medium$50-$100

Clean the throttle body to resolve idle fluctuations.

Source: https://www.youtube.com/watch?v=SFeP4jpJox0

Repair Steps:

Disconnect the battery to reset the ECU
Remove the air intake hose to access the throttle body
Spray throttle body cleaner into the throttle body
Use a brush to clean the throttle plate and surrounding area
Reassemble the intake components and reconnect the battery

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