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why does my Toyota Camry Eighth Generation (2018-present) engine idle rough when in gear - Toyota Camry
Home/Cars/Toyota/Camry/Eighth Generation (2018-present)/why does my Toyota Camry Eighth Generation (2018-present) engine idle rough when in gear

why does my Toyota Camry Eighth Generation (2018-present) engine idle rough when in gear

Toyota Camry Eighth Generation (2018-present)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
561 words

Problem Statement

Learn how to diagnose and fix rough idling in Toyota Camry Eighth Generation. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component
Engine
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical systems.
  • •Allow the engine to cool down before servicing any components.

Symptoms

  • •Engine vibrates noticeably when stopped at a traffic light
  • •Occasional stalling or hesitation during acceleration
  • •Check engine light illuminated
  • •Poor fuel economy
  • •Increased emissions

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •OBD-II scanner
  • •Socket set
  • •Throttle body cleaner
  • •Fuel pressure gauge
  • •Spark plug socket

Parts Required

  • •Air filter
  • •Spark plugs
  • •Fuel filter (if needed)

Additional Information

Affected Component
Engine
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
5 items
Parts Required
3 items

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Solution
1. Preparation
  • Gather necessary tools and parts before starting the repair.
  • Disconnect the battery to prevent any electrical shorts.
2. Clean or Replace the Air Filter
  • Remove the air filter housing cover using a socket set.
  • Take out the air filter and inspect it for dirt or damage.
  • If dirty, clean it with compressed air or replace it with a new one.
  • Reinstall the air filter and housing cover, ensuring a proper seal.
3. Clean the Throttle Body
  • Remove the intake duct connected to the throttle body using a socket set.
  • Use throttle body cleaner and a soft brush to clean the throttle body and plate.
  • Ensure that no cleaner enters the intake manifold.
  • Reattach the intake duct securely.
4. Inspect and Replace Spark Plugs
  • Remove the ignition coil covers if applicable.
  • Disconnect the ignition coils and unscrew them using a socket set.
  • Remove the spark plugs with a spark plug socket.
  • Inspect the plugs for wear; replace them if they are worn or fouled.
  • Install new spark plugs according to manufacturer specifications (typically 0.044 inches gap).
  • Reinstall the ignition coils and covers.
5. Test and Repair Fuel System
  • Attach the fuel pressure gauge to the fuel rail.
  • Turn the ignition to the "ON" position without starting the engine to check fuel pressure.
  • If pressure is below specifications, check the fuel pump and filter for blockages.
  • Replace the fuel filter if necessary and consider replacing the fuel pump if it is faulty.