my Honda Accord 9th Generation (2013-2017) transmission slips when accelerating, what to do

Honda Accord Eleventh Generation (2023-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

582 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 diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool before working on the transmission.
•Always use safety stands when raising the vehicle for access.

Symptoms

•Transmission slips or delays when shifting gears
•Engine revs higher than normal without corresponding increase in speed
•Check engine light may be illuminated
•Unusual noises (grinding or whining) during acceleration
•Decreased fuel efficiency
•Transmission fluid leakage under the vehicle

Diagnostic Steps

1
Scan the vehicle's onboard diagnostic system using an OBD-II scanner to check for error codes related to the transmission.
2
Inspect the transmission fluid level and condition; look for signs of contamination or burnt smell.
3
Check for any visible leaks around the transmission and associated lines.
4
Test the transmission fluid pressure using a pressure gauge to determine if it meets manufacturer specifications.
5
Inspect the transmission filter for clogs or blockages that could impede fluid flow.
6
Conduct a road test to replicate the slipping issue and note the conditions under which it occurs (e.g., cold vs. hot).

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 pressure gauge
•Socket set
•Torque wrench
•Transmission fluid
•Funnel
•Rags

Parts Required

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

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Diagnostic Steps

1
Scan the vehicle's onboard diagnostic system using an OBD-II scanner to check for error codes related to the transmission.
2
Inspect the transmission fluid level and condition; look for signs of contamination or burnt smell.
3
Check for any visible leaks around the transmission and associated lines.
4
Test the transmission fluid pressure using a pressure gauge to determine if it meets manufacturer specifications.
5
Inspect the transmission filter for clogs or blockages that could impede fluid flow.
6
Conduct a road test to replicate the slipping issue and note the conditions under which it occurs (e.g., cold vs. hot).

Solution

1. Preparation

Tools Required: OBD-II scanner, fluid pressure gauge, socket set, torque wrench, transmission fluid, funnel, rags.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to prevent electrical issues during repairs.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick and remove it to check fluid level.
2. If fluid is low, add the recommended type of transmission fluid (typically Honda ATF DW-1).
3. If fluid is contaminated, drain the old fluid by locating the drain plug, removing it, and allowing the fluid to fully drain into a pan.
4. Replace the drain plug with a new gasket and torque to manufacturer specifications (usually around 15-20 ft-lbs).
5. Refill the transmission with new fluid through the dipstick tube using a funnel.

3. Inspect and Replace Transmission Filter

Sub-steps:
1. Remove the transmission pan by unbolting it (ensure the vehicle is secure and raised safely).
2. Inspect the transmission filter for clogs. If it appears dirty or damaged, replace it with a new filter.
3. Clean the transmission pan and replace the gasket.
4. Reinstall the pan and torque bolts to the specified value (typically around 10-12 ft-lbs).

4. Electrical and Sensor Check

Sub-steps:
1. Inspect the Transmission Control Module (TCM) connections for corrosion or damage.
2. Check the throttle position sensor and vehicle speed sensor for proper operation.
3. Replace any faulty sensors as necessary and clear any error codes.