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2012
toyota camry19 views

Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2012 toyota camry Rough Idle or Engine Misfire. Get step-by-step fixes, cost estimates, and professional advice.

Expert Repair Solutions

1
easy$50-$100
Clean the throttle body to remove carbon buildup, which can cause rough idling.
Source: https://www.youtube.com/watch?v=wY9X8cSZqbc

Repair Steps:

  1. Remove the air intake hose from the throttle body.
  2. Spray throttle body cleaner into the throttle body while manually opening the throttle plate.
  3. Use a clean cloth to wipe away carbon deposits.
  4. Reassemble the air intake components.
2
medium$150-$300
Replace faulty spark plugs and ignition coils to resolve misfire issues.
Source: https://community.cartalk.com/t/2012-camry-se-misfiring/83709

Repair Steps:

  1. Identify the misfiring cylinder using a diagnostic tool.
  2. Remove the ignition coil and spark plug from the affected cylinder.
  3. Install a new spark plug and ignition coil.
  4. Re-test the engine to ensure the misfire is resolved.
3
medium$100-$200
Inspect and repair any vacuum leaks that may cause rough idle.
Source: https://repairpal.com/toyota/camry/2012/rough-idle

Repair Steps:

  1. Use a smoke machine to detect any vacuum leaks in the engine bay.
  2. Inspect hoses and connections for cracks or disconnections.
  3. Replace or repair any damaged vacuum lines.
  4. Verify the repair by checking for improved idle stability.
4
easy$0 if diagnosing, cost of replacement coil if needed
Swap ignition coils between cylinders to diagnose faulty coils.
Source: https://carkiller.com/scottykilmer/qa/2012-camry-se/

Repair Steps:

  1. Identify the cylinder with the misfire.
  2. Swap the ignition coil from the misfiring cylinder with another cylinder.
  3. Check if the misfire moves to the new cylinder location.
  4. Replace the faulty ignition coil if necessary.
5
easy$50-$150
Perform regular maintenance including air filter and O2 sensor replacement.
Source: https://www.toyotanation.com/threads/2012-toyota-camry-4-cyl-running-rough.1710433/

Repair Steps:

  1. Replace the air filter with a new one to ensure proper airflow.
  2. Replace the O2 sensor if faulty to ensure proper fuel mixture.
  3. Perform a test drive to confirm resolution of rough idle.

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