Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2007 Ram 1500 Rough Idle or Engine Misfire. Get step-by-step fixes, cost estimates, and professional advice.

Expert Repair Solutions

medium$150-$300

Replace faulty ignition coils and spark plugs to resolve misfire issues.

Source: https://www.justanswer.com/dodge/p8tzf-2007-dodge-ram-1500-5-7-hemi-throwing-p0300-multiple-misfire.html

Repair Steps:

Remove the engine cover to access the ignition coils
Disconnect the electrical connectors from the coils
Remove the bolts securing the coils and remove them
Replace with new ignition coils and secure them with bolts
Replace the spark plugs with new ones
Reconnect the electrical connectors and replace the engine cover

hard$100-$200

Update the PCM software to address misfire issues related to engine timing.

Source: https://static.nhtsa.gov/odi/tsbs/2025/MC-11013168-0001.pdf

Repair Steps:

Visit a dealership or an authorized service center
Request a PCM software update referencing the relevant TSB
Technician will connect the vehicle to the diagnostic tool
The PCM software will be updated to the latest version
Test drive the vehicle to ensure the issue is resolved

easy$50-$100

Inspect and replace the PCV valve and idle air control valve if necessary.

Source: https://www.facebook.com/groups/dodgeram1500usa/posts/3521048051370826/

Repair Steps:

Locate the PCV valve on the engine
Remove the valve and inspect for clogs or damage
Replace with a new PCV valve if necessary
Locate the idle air control valve
Remove and clean the valve or replace if faulty
Reinstall the components and test the engine idle

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