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Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2017 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 worn spark plugs and ignition coils to address misfire and rough idle issues.
Source: https://www.justanswer.com/ford/pskbl-2017-ford-f150-ecoboost-driving.html

Repair Steps:

  1. Inspect the spark plugs for wear and replace them if necessary.
  2. Check the ignition coils for functionality and replace any faulty units.
  3. Test drive the vehicle to ensure the issue is resolved.
2
easy$50-$100
Clean the Mass Air Flow (MAF) sensor and throttle body to improve engine idle smoothness.
Source: https://www.youtube.com/watch?v=kJtattyUKJ4

Repair Steps:

  1. Disconnect the battery to reset the ECU.
  2. Remove and clean the MAF sensor with appropriate cleaner.
  3. Clean the throttle body using throttle body cleaner.
  4. Reassemble and reconnect the battery.
3
medium$100-$200
Inspect and repair any vacuum leaks in the engine to stabilize idle.
Source: https://repairpal.com/ford/f-150/2017/rough-idle

Repair Steps:

  1. Use a smoke machine to detect vacuum leaks in the engine bay.
  2. Identify and replace any damaged hoses or gaskets.
  3. Re-test for leaks and confirm repair effectiveness.
4
hard$200-$400
Reprogram the Powertrain Control Module (PCM) to address misfire issues.
Source: https://static.nhtsa.gov/odi/tsbs/2019/MC-10169890-0001.pdf

Repair Steps:

  1. Connect the vehicle to a diagnostic tool with the latest software.
  2. Download and install the updated PCM calibration files.
  3. Test the vehicle to ensure the misfire issue is resolved.
5
hard$3,000-$5,000
Replace the cylinder heads to address rough idle and excessive oil consumption.
Source: https://www.f150forum.com/f118/2016-17-f150-2-7l-oil-consumption-rough-idle-misfire-ex-smoke-tsb-17-2077-a-381323/index55/

Repair Steps:

  1. Remove the engine cover and accessories to access the cylinder heads.
  2. Replace the cylinder heads with updated parts as per TSB guidelines.
  3. Reassemble the engine components and test for proper operation.

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