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Home/Cars/Honda/Accord/9th Generation (2013-2017)/my Honda Accord stalls at red lights what could be wrong

my Honda Accord stalls at red lights what could be wrong

Honda Accord 9th Generation (2013-2017)

Severity: highDifficulty: medium2-4 hours
3 min read
507 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix stalling issues in Honda Accord. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Component
Engine
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems.
  • ⚠Allow the engine to cool before cleaning the throttle body.

Symptoms

  • •Engine stalling at idle
  • •Rough or uneven idle
  • •Check engine light illuminated
  • •Difficulty restarting the engine after stalling
  • •Poor acceleration when taking off from a stop
  • •Increased fuel consumption

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to identify any trouble codes related to the engine.
  2. 2Check the fuel level and ensure it is adequate; inspect for any signs of fuel contamination.
  3. 3Inspect the air filter for blockage and replace if necessary.
  4. 4Examine the throttle body for carbon buildup and clean if needed.
  5. 5Test the idle air control valve (IAC) for proper operation using a multimeter.
  6. 6Check for vacuum leaks in the intake manifold and associated hoses.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Disconnect the negative terminal of the battery to ensure safety.

2. Clean the Throttle Body

  • Remove the air intake duct connected to the throttle body using a socket set.
  • Spray throttle body cleaner into the throttle body while opening the throttle plate manually.
  • Wipe clean with a lint-free cloth and reassemble the duct.

3. Inspect and Test the Idle Air Control Valve

  • Locate the IAC valve on the throttle body.
  • Disconnect the electrical connector and remove the IAC valve using a socket set.
  • Inspect for carbon buildup; clean if necessary.
  • Test the valve operation using a multimeter; replace if it does not meet specifications.

4. Check for Vacuum Leaks

  • Visually inspect all vacuum hoses connected to the intake manifold.
  • Use a smoke machine or spray brake cleaner around the hoses and intake manifold while the engine is idling; listen for changes in engine RPM indicating a leak.
  • Replace any damaged hoses or seals.

5. Reconnect Battery and Reset Engine Control Unit

  • Reconnect the negative battery terminal.
  • Clear any error codes from the OBD-II scanner.
  • Start the engine and let it idle to observe for stalling.

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
  • Multimeter
  • Throttle body cleaner
  • Lint-free cloth

Parts Required

  • Idle air control valve (if defective)
  • Air filter (if contaminated)

Additional Information

Component

Engine

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

5 items

Parts

2 items

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