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2020
toyota camry20 views

Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2020 toyota camry 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 as part of the recall campaign 20V682000 to prevent engine stalling and rough idle.
Source: https://www.nhtsa.gov/recalls

Repair Steps:

  1. Contact Toyota dealer to confirm recall eligibility
  2. Schedule an appointment for fuel pump replacement
  3. Dealer replaces fuel pump assembly
2
medium$150-$300 per coil
Inspect and replace faulty ignition coils to resolve engine misfire and rough idle.
Source: https://craigscarcare.com/blog/toyota-engine-misfire-troubleshooting/

Repair Steps:

  1. Diagnose the specific cylinder misfire using an OBD-II scanner
  2. Remove the faulty ignition coil
  3. Install a new ignition coil and test for resolution
3
easy$10-$50 for cleaning supplies
Clean the throttle body to remove carbon buildup that may cause rough idle.
Source: https://www.youtube.com/watch?v=GdkibY-FWZ8

Repair Steps:

  1. Disconnect the battery
  2. Remove the air intake hose
  3. Clean the throttle body with a throttle body cleaner
  4. Reassemble and test idle
4
medium$50-$200 depending on parts needed
Address vacuum leaks which can cause rough idle by inspecting and replacing damaged hoses.
Source: https://repairpal.com/toyota/camry/2020/rough-idle

Repair Steps:

  1. Inspect vacuum hoses for cracks or disconnections
  2. Replace any damaged hoses
  3. Test engine idle after repairs
5
medium$0-$100 if not covered under warranty
Reprogram the engine ECU as per Technical Service Bulletin 19TC06 to correct erroneous transmission calibration values.
Source: https://static.nhtsa.gov/odi/tsbs/2024/MC-10252262-9999.pdf

Repair Steps:

  1. Visit the dealer for ECU reprogramming
  2. Ensure the latest software version is installed
  3. Verify vehicle operation post-reprogramming

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