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2019
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Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2019 Ford F-150 Rough Idle or Engine Misfire. Get step-by-step fixes, cost estimates, and professional advice.

Expert Repair Solutions

1
medium$150-$300
Replace spark plugs and ignition coils to address rough idle and misfire issues.
Source: https://repairpal.com/ford/f-150/2019/rough-idle

Repair Steps:

  1. Purchase OEM or high-quality aftermarket spark plugs and ignition coils.
  2. Remove the engine cover to access the ignition system.
  3. Disconnect the battery to prevent electrical shorts.
  4. Remove the ignition coils and spark plugs.
  5. Install new spark plugs and ignition coils.
  6. Reconnect the battery and test the engine for smooth idle.
2
easy$20-$50
Inspect and clean the throttle body and MAF sensor to improve idle stability.
Source: https://www.youtube.com/watch?v=kJtattyUKJ4

Repair Steps:

  1. Purchase throttle body cleaner and MAF sensor cleaner.
  2. Disconnect the battery to reset the ECU.
  3. Remove the air intake duct to access the throttle body.
  4. Spray throttle body cleaner on a cloth and wipe the throttle body interior.
  5. Remove the MAF sensor and clean it with MAF sensor cleaner.
  6. Reassemble all components and reconnect the battery.
3
medium$50-$150
Check for vacuum leaks and repair any damaged hoses or connections.
Source: https://repairpal.com/ford/f-150/2019/rough-idle

Repair Steps:

  1. Use a smoke machine to detect vacuum leaks in the intake system.
  2. Inspect all vacuum hoses and connections for signs of wear or damage.
  3. Replace any cracked or damaged hoses.
  4. Ensure all connections are tight and secure.
  5. Test the engine to confirm the idle issue is resolved.
4
hard$400-$600
Replace the muffler if internal components are improperly assembled, causing misfire.
Source: https://static.nhtsa.gov/odi/tsbs/2019/MC-10169890-0001.pdf

Repair Steps:

  1. Purchase a replacement muffler from a reputable supplier.
  2. Raise the vehicle using a lift or jack stands.
  3. Remove the old muffler by loosening the clamps and bolts.
  4. Install the new muffler, ensuring all connections are secure.
  5. Lower the vehicle and test for any exhaust leaks.
5
medium$100-$200
Reprogram the PCM to address software-related misfire issues.
Source: https://www.youtube.com/watch?v=KZcb4pvk8Iw

Repair Steps:

  1. Visit a Ford dealership or authorized service center.
  2. Request a PCM software update to the latest version.
  3. Technician will connect the vehicle to a diagnostic tool and perform the update.
  4. Test the vehicle to ensure the misfire issue is resolved.

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