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2007
toyota corolla4 views

Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2007 toyota corolla Rough Idle or Engine Misfire. Get step-by-step fixes, cost estimates, and professional advice.

Expert Repair Solutions

1
medium$150-$300
Replace the intake manifold gasket and throttle body gasket to resolve vacuum leaks causing rough idle.
Source: https://www.reddit.com/r/MechanicAdvice/comments/otw761/2007_toyota_corolla_misfire_issues/

Repair Steps:

  1. Remove the intake manifold.
  2. Replace the old gasket with a new one.
  3. Reinstall the intake manifold and ensure all connections are secure.
2
easy$100-$200
Replace worn-out spark plugs and ignition coils to improve combustion and eliminate misfires.
Source: https://brockautomotive.com/2024/09/24/what-are-the-common-causes-of-a-rough-idle-in-my-toyota/

Repair Steps:

  1. Remove the ignition coil cover.
  2. Unplug the ignition coils and remove them.
  3. Replace the spark plugs with new ones.
  4. Reinstall the ignition coils and secure the cover.
3
easy$50-$100
Inspect and replace any cracked or brittle vacuum hoses to prevent air leaks.
Source: https://www.facebook.com/groups/711938429853649/posts/1433389087708576/

Repair Steps:

  1. Visually inspect all vacuum hoses for cracks or damage.
  2. Replace any damaged hoses with new ones.
  3. Ensure all connections are tight and secure.
4
easy$10-$20
Use a fuel injector cleaner additive to address clogged or dirty fuel injectors.
Source: https://www.facebook.com/groups/711938429853649/posts/1433389087708576/

Repair Steps:

  1. Purchase a recommended fuel injector cleaner.
  2. Add the cleaner to the fuel tank as per the instructions.
  3. Drive the vehicle to allow the cleaner to circulate through the system.
5
hardFree under recall
Inspect and replace the Engine Control Module (ECM) if necessary, as per recall 10V384000.
Source: Recall information

Repair Steps:

  1. Contact a Toyota dealer to inspect the ECM.
  2. If the ECM is identified as faulty, have it replaced under the recall.
  3. Verify engine performance post-replacement.

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