why does my Honda Accord 9th Generation (2013-2017) transmission lag when shifting gears

Honda Accord Eleventh Generation (2023-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

503 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 transmission lag in Honda Accord 9th Generation (2013-2017). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine and transmission to cool before servicing.

Symptoms

•Noticeable delay when shifting from one gear to another
•Slipping sensation during acceleration
•Harsh or rough shifts between gears
•Sudden increase in RPM without corresponding speed increase
•Transmission warning light illuminated on the dashboard

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related faults.
2
Check the transmission fluid level and condition; look for signs of contamination or burn smell.
3
Inspect the transmission control module (TCM) for any electrical issues or loose connections.
4
Test the transmission solenoids for proper operation using a multimeter.
5
Evaluate the condition of the transmission filter for clogs or restrictions.
6
Verify the throttle position sensor (TPS) functionality to ensure proper communication with the transmission.

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
•Torque wrench
•Multimeter
•Transmission fluid pump
•Drain pan
•Funnel

Parts Required

•Transmission fluid
•Transmission filter (if applicable)
•Solenoids (if faulty)
•Gasket for transmission pan

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related faults.
2
Check the transmission fluid level and condition; look for signs of contamination or burn smell.
3
Inspect the transmission control module (TCM) for any electrical issues or loose connections.
4
Test the transmission solenoids for proper operation using a multimeter.
5
Evaluate the condition of the transmission filter for clogs or restrictions.
6
Verify the throttle position sensor (TPS) functionality to ensure proper communication with the transmission.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.

2. Transmission Fluid Change

Tools Required: Socket set, transmission fluid pump, drain pan, funnel.
Instructions:
1. Place a drain pan under the transmission pan.
2. Remove the transmission pan bolts and carefully lower the pan to drain the fluid.
3. Replace the transmission filter if applicable.
4. Clean the transmission pan and magnet from debris.
5. Reinstall the pan with a new gasket and torque bolts to the manufacturer’s specifications.

3. Inspect and Replace Solenoids

Tools Required: Torque wrench, socket set, multimeter.
Instructions:
1. Disconnect the battery.
2. Remove the transmission pan again if necessary to access solenoids.
3. Disconnect electrical connectors from solenoids.
4. Test solenoids with a multimeter for proper resistance values.
5. Replace any faulty solenoids and reconnect the electrical connectors.

4. TCM and Electrical Connections

Tools Required: OBD-II scanner, multimeter.
Instructions:
1. Inspect the TCM wiring harness for any frayed or damaged wires.
2. Reconnect any loose connections.
3. If necessary, replace the TCM.
4. Clear any error codes from the OBD-II scanner and test drive the vehicle.