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2005
ram 150021 views

Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2005 ram 1500 Rough Idle or Engine Misfire. Get step-by-step fixes, cost estimates, and professional advice.

Expert Repair Solutions

1
medium$100-$300
Replace faulty spark plugs and ignition coils to address misfires and rough idle.
Source: https://www.manahawkinchryslerdodge.net/how-to-fix-a-misfiring-ram-engine

Repair Steps:

  1. Identify misfiring cylinders using a diagnostic scan tool
  2. Remove and inspect spark plugs and ignition coils
  3. Replace any faulty spark plugs and ignition coils
2
medium$150-$250
Inspect and replace crankshaft or camshaft sensors if faulty.
Source: https://www.justanswer.com/dodge/l0noi-2005-dodge-ram-1500-5-7l-p300-issue-runs-rough-off-idle.html

Repair Steps:

  1. Use a diagnostic tool to check for sensor-related error codes
  2. Locate and inspect the crankshaft and camshaft sensors
  3. Replace any faulty sensors
3
easy$50-$100
Perform a PCM software update as per the TSB to resolve rough idle issues.
Source: https://static.nhtsa.gov/odi/tsbs/2025/MC-11013168-0001.pdf

Repair Steps:

  1. Verify the vehicle's current software version
  2. Download the latest PCM software update from the manufacturer's website
  3. Use a compatible scan tool to install the update
4
hard$200-$500
Clean carbon buildup from the engine valves to improve idle smoothness.
Source: https://www.ramforumz.com/threads/05-misfire-and-rough-idle-at-start.80365/

Repair Steps:

  1. Remove the intake manifold to access the valves
  2. Use a suitable cleaning agent to remove carbon deposits
  3. Reassemble the intake manifold and test for improvements

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