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2020
toyota corolla6 views

Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2020 toyota corolla Rough Idle or Engine Misfire. Get step-by-step fixes, cost estimates, and professional advice.

Expert Repair Solutions

1
medium$0 (covered under recall)
Replace the fuel pump assembly under recall 20V682000 to prevent engine stalling and rough idle.
Source: https://static.nhtsa.gov/odi/rcl/2020/RCLRPT-20V682-1041.PDF

Repair Steps:

  1. Contact Toyota dealer to confirm recall applicability
  2. Schedule an appointment for fuel pump replacement
  3. Dealer replaces fuel pump assembly
2
medium$100-$200
Inspect and replace worn spark plugs and ignition coils to resolve misfire issues.
Source: https://www.quora.com/What-causes-a-misfire-in-a-Toyota-Corolla

Repair Steps:

  1. Remove engine cover to access spark plugs
  2. Inspect spark plugs for wear and replace if necessary
  3. Check ignition coils for damage and replace if needed
3
easy$20-$50
Clean the throttle body to address rough idle and stalling issues.
Source: https://www.youtube.com/watch?v=qfnTMMJK3fs

Repair Steps:

  1. Disconnect battery and remove air intake hose
  2. Spray throttle body cleaner on a cloth and wipe the throttle body
  3. Reassemble components and reconnect battery
4
medium$50-$150
Check for and repair vacuum leaks which can cause rough idle.
Source: https://www.facebook.com/groups/711938429853649/posts/1433389087708576/

Repair Steps:

  1. Inspect vacuum hoses for cracks or disconnections
  2. Replace damaged hoses
  3. Check intake manifold gasket for leaks and replace if necessary

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