why does my Ford F-150 13th Generation (2015-2020) feel like it’s slipping in and out of gear

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

558 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 Ford F-150 (2015-2020). Step-by-step guide with symptoms, diagnostic steps, 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 to cool before opening the transmission system.

Symptoms

•Intermittent loss of power during acceleration
•Unusual engine revving without corresponding vehicle speed increase
•Harsh or delayed shifting between gears
•Transmission warning light illuminated on the dashboard
•Fluid leaks observed under the vehicle
•Burning smell from the transmission area

Diagnostic Steps

1
Scan the vehicle's OBD-II system for any error codes related to the transmission.
2
Check the transmission fluid level and condition; ensure fluid is at the proper level and not burnt or contaminated.
3
Inspect the transmission fluid cooler lines for leaks or damage.
4
Test the transmission solenoids for proper operation using a multimeter.
5
Examine the transmission mounts for wear or damage that may lead to improper alignment.
6
Conduct a road test to observe shifting patterns and note any irregularities.

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
•Multimeter
•Transmission fluid pump
•Torque wrench

Parts Required

•Transmission fluid
•Transmission filter
•Gasket or sealant
•Transmission solenoids (if required)

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Symptoms

•Intermittent loss of power during acceleration

•Unusual engine revving without corresponding vehicle speed increase

•Harsh or delayed shifting between gears

•Transmission warning light illuminated on the dashboard

•Fluid leaks observed under the vehicle

•Burning smell from the transmission area

Diagnostic Steps

1
Scan the vehicle's OBD-II system for any error codes related to the transmission.
2
Check the transmission fluid level and condition; ensure fluid is at the proper level and not burnt or contaminated.
3
Inspect the transmission fluid cooler lines for leaks or damage.
4
Test the transmission solenoids for proper operation using a multimeter.
5
Examine the transmission mounts for wear or damage that may lead to improper alignment.
6
Conduct a road test to observe shifting patterns and note any irregularities.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, multimeter, transmission fluid pump, torque wrench.
Ensure the vehicle is on a level surface and the engine is off.
Disconnect the negative battery terminal to prevent electrical issues.

2. Fluid Replacement

Drain Transmission Fluid:
- Remove the transmission pan using a socket set.
- Allow the fluid to drain completely into a suitable container.
Replace Transmission Filter:
- Remove the old filter and replace it with a new one.
- Ensure the new filter is seated properly.
Install New Gasket:
- Clean the mating surfaces of the transmission pan and the transmission body.
- Apply a new gasket or sealant as per the manufacturer's specifications.
Refill Transmission Fluid:
- Use a transmission fluid pump to fill the transmission with the appropriate fluid type (consult the owner's manual for specifications).
- Start the engine and allow it to reach operating temperature, then check fluid level again.

3. Solenoid Replacement (if necessary)

Remove Transmission Pan (if not already removed):
- Refer to step 2.1 to drain and remove the pan.
Access Transmission Solenoids:
- Locate the solenoids on the valve body.
- Disconnect the electrical connectors and remove the bolts securing the solenoids.
Install New Solenoids:
- Position the new solenoids and secure them with bolts.
- Reconnect the electrical connectors.
Reassemble Transmission Pan:
- Reinstall the transmission pan and tighten bolts to manufacturer’s torque specifications.