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2014
nissan altima22 views

Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2014 nissan altima Rough Idle or Engine Misfire. Get step-by-step fixes, cost estimates, and professional advice.

Expert Repair Solutions

1
medium$150-$300
Inspect and replace faulty ignition coils to address engine misfire and rough idle.
Source: https://repairpal.com/nissan/altima/2014/rough-idle

Repair Steps:

  1. Diagnose the faulty ignition coil using an OBD-II scanner
  2. Remove the engine cover to access the ignition coils
  3. Replace the faulty ignition coil(s) with new ones
  4. Reassemble the engine cover and test the vehicle
2
medium$100-$200
Check for and repair vacuum leaks which can cause rough idle.
Source: https://www.altimaforums.net/threads/rough-idle-in-drive-or-reverse.55940/

Repair Steps:

  1. Use a smoke machine or starter fluid to identify vacuum leaks
  2. Inspect hoses and gaskets for signs of wear or damage
  3. Replace any damaged hoses or gaskets
  4. Recheck for leaks and ensure proper sealing
3
hard$500-$1000
Address timing chain issues which may cause engine misfire and rough idle.
Source: https://www.justanswer.com/nissan/ha2iy-2014-altima-rough-idle-stalling-2014-altima-codes.html

Repair Steps:

  1. Diagnose timing chain issues using an OBD-II scanner for codes like P0014
  2. Remove necessary components to access the timing chain
  3. Inspect the timing chain and tensioner for wear or damage
  4. Replace the timing chain and tensioner if needed
  5. Reassemble components and test the engine
4
easy$50-$100
Clean the throttle body to improve idle quality.
Source: https://www.nissanclub.com/threads/rough-idle-upon-start-up.329708/

Repair Steps:

  1. Disconnect the battery to ensure safety
  2. Remove the air intake hose to access the throttle body
  3. Use a throttle body cleaner to clean the inside of the throttle body
  4. Reassemble the intake hose and reconnect the battery
  5. Start the engine and check for improvement in idle quality

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