why does my Honda Accord 9th Generation (2013-2017) transmission slip when accelerating

Honda Accord Eleventh Generation (2023-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

579 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 slipping issues in Honda Accord 9th Generation (2013-2017). Step-by-step guide with tools and procedures.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool completely before working on the transmission.
•Always use safety glasses and gloves when handling transmission fluid.

Symptoms

•Transmission slips or hesitates when accelerating
•Unusual engine revving without a corresponding increase in speed
•Delayed or harsh shifting between gears
•Transmission warning light illuminated on the dashboard
•Poor fuel economy
•Fluid leaks under the vehicle

Diagnostic Steps

1
Scan the vehicle's ECU for any error codes using an OBD-II scanner.
2
Inspect the transmission fluid level and condition; check for discoloration or burnt smell.
3
Check for any external leaks around the transmission seals and gaskets.
4
Test the transmission fluid pressure using a pressure gauge.
5
Inspect the transmission filter for clogs or blockages.
6
Examine the throttle position sensor (TPS) to ensure proper function.

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
•Transmission fluid pump
•Socket set
•Funnel
•Fluid catch pan
•Screwdrivers
•Torque wrench

Parts Required

•Honda ATF DW-1 transmission fluid
•Transmission filter
•Transmission pan gasket

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Diagnostic Steps

1
Scan the vehicle's ECU for any error codes using an OBD-II scanner.
2
Inspect the transmission fluid level and condition; check for discoloration or burnt smell.
3
Check for any external leaks around the transmission seals and gaskets.
4
Test the transmission fluid pressure using a pressure gauge.
5
Inspect the transmission filter for clogs or blockages.
6
Examine the throttle position sensor (TPS) to ensure proper function.

Solution

1. Preparation

Gather necessary tools and parts. Ensure the vehicle is parked on a level surface.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

Tools Required: Transmission fluid pump, socket set, funnel, fluid catch pan.
Sub-steps:
1. Locate the transmission dipstick or fill port.
2. Remove the dipstick or fill port and use the fluid pump to extract old fluid into the catch pan.
3. Inspect the old fluid for contamination and odor.
4. Replace with manufacturer-recommended transmission fluid (typically Honda ATF DW-1).
5. Reinsert the dipstick or fill port and check the fluid level.

3. Inspect and Replace Transmission Filter

Tools Required: Socket set, screwdrivers, gasket scraper.
Sub-steps:
1. Remove the transmission pan using the socket set, being cautious of any remaining fluid.
2. Detach the transmission filter by unscrewing or unclipping it.
3. Clean the mating surfaces of the transmission pan and the transmission body.
4. Install a new filter, ensuring it is seated correctly.
5. Reinstall the transmission pan with a new gasket, tightening bolts to the manufacturer’s specifications.

4. Test and Adjust Transmission Control

Tools Required: Scan tool for transmission programming.
Sub-steps:
1. Reconnect the negative battery terminal.
2. Use the scan tool to reset any transmission adaptation settings if applicable.
3. Start the engine and allow it to reach operating temperature.
4. Perform a test drive to verify that shifting is smooth and slipping has been resolved.