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2015
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Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2015 ram 1500 Rough Idle or Engine Misfire. Get step-by-step fixes, cost estimates, and professional advice.

Expert Repair Solutions

1
medium$150-$300
Replace faulty spark plugs and ignition coils to resolve misfire issues.
Source: https://www.manahawkinchryslerdodge.net/how-to-fix-a-misfiring-ram-engine

Repair Steps:

  1. Inspect spark plugs for wear and replace if necessary.
  2. Check ignition coils for proper function and replace faulty units.
  3. Ensure proper gapping of spark plugs before installation.
2
medium$100-$200
Inspect and repair any vacuum leaks that may be causing rough idle.
Source: https://repairpal.com/ram/1500/rough-idle

Repair Steps:

  1. Perform a smoke test to identify vacuum leaks.
  2. Repair or replace any damaged vacuum hoses or gaskets.
  3. Re-test to ensure the vacuum system is sealed properly.
3
easyFree under recall
Update the powertrain control module (PCM) software to address engine misfire and rough idle.
Source: https://static.nhtsa.gov/odi/tsbs/2025/MC-11013168-0001.pdf

Repair Steps:

  1. Visit an authorized dealer to have the PCM software updated.
  2. Ensure that the update addresses the specific Diagnostic Trouble Codes (DTCs) related to misfire.
  3. Verify that the engine runs smoothly post-update.
4
hardFree under recall
Replace the Exhaust Gas Recirculation (EGR) cooler to prevent misfire due to combustion in the intake manifold.
Source: Recall 19V757000

Repair Steps:

  1. Contact an authorized dealer to schedule a recall service.
  2. Have the EGR cooler inspected and replaced if necessary.
  3. Ensure the intake manifold is also inspected and replaced if needed.
5
medium$200-$400
Inspect and clean fuel injectors to resolve rough idle and misfire.
Source: https://www.justanswer.com/dodge/p1z14-2015-ram-1500-5-7-hemi.html

Repair Steps:

  1. Use a fuel injector cleaning kit to clean the injectors.
  2. Inspect injectors for leaks and replace any faulty units.
  3. Reinstall injectors and test the engine for smooth operation.

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