my Honda Accord 9th Generation (2013-2017) transmission slips when I accelerate, what’s wrong?

Honda Accord Eleventh Generation (2023-present)

Error Codes

4-6 hours

Time

hard

Difficulty

high

Severity

3 min read

529 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 2013-2017. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

4-6 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening the transmission system.

Symptoms

•Transmission slips or hesitates during acceleration
•Unusual engine revving without corresponding vehicle acceleration
•Check engine light illuminated
•Fluid leakage underneath the vehicle
•Harsh or delayed shifting between gears

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any fault codes related to the transmission.
2
Inspect the transmission fluid level and condition; check for contamination or burning smell.
3
Check for any external leaks around the transmission pan and seals.
4
Inspect the transmission fluid cooler for blockages or damage.
5
Test the transmission solenoids and sensor connections for electrical faults.
6
Verify the operation of the throttle position sensor and any related components.

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
•Fluid pump
•Socket set
•Multimeter
•Torque wrench

Parts Required

•Honda ATF DW-1 transmission fluid
•New transmission filter
•Transmission pan gasket or RTV sealant
•Transmission solenoids (if faulty)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any fault codes related to the transmission.
2
Inspect the transmission fluid level and condition; check for contamination or burning smell.
3
Check for any external leaks around the transmission pan and seals.
4
Inspect the transmission fluid cooler for blockages or damage.
5
Test the transmission solenoids and sensor connections for electrical faults.
6
Verify the operation of the throttle position sensor and any related components.

Solution

1. Preparation

Gather tools and parts before starting.
Ensure the vehicle is on a level surface and secure with wheel chocks.
Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Transmission Fluid

Tools Required: Socket set, fluid pump, transmission fluid (ATF DW-1), funnel.
Check the transmission fluid level with the dipstick. If low, fill with the appropriate transmission fluid.
If the fluid is dark or burnt, drain the old fluid using a fluid pump.
Replace with fresh Honda ATF DW-1 fluid. Ensure proper level is maintained.

3. Examine and Replace Transmission Filter

Tools Required: Socket set, new transmission filter, gasket, RTV sealant.
Remove the transmission pan using a socket set. Be prepared for fluid spillage.
Remove the old filter and replace it with a new one, ensuring the O-ring is properly seated.
Clean the transmission pan and install a new gasket or apply RTV sealant.

4. Inspect and Test Transmission Solenoids

Tools Required: Multimeter, socket set.
Locate the transmission solenoids and disconnect the electrical connectors.
Use a multimeter to test the resistance of each solenoid according to manufacturer specifications.
Replace any faulty solenoids as necessary.

5. Reassemble and Refill

Reinstall the transmission pan and ensure it is properly torqued to manufacturer specifications (usually around 10-12 ft-lbs).
Refill the transmission fluid through the dipstick tube with the correct type of ATF until the correct level is achieved.
Reconnect the battery.