my Ford F-150 13th Generation (2015-2020) has a hard shifting transmission what can I do

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

554 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 hard shifting transmission issues in Ford F-150 (2015-2020). Step-by-step guide with symptoms, diagnostic steps, and solutions.

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 performing fluid changes.

Symptoms

•Hard or rough shifting between gears
•Delayed engagement when shifting from park to drive/reverse
•Unusual noises during shifting (clunking or grinding)
•Check engine light illuminated
•Poor acceleration performance

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; look for discoloration or burnt smell.
3
Inspect the transmission fluid cooler for leaks or blockages.
4
Examine the transmission control module (TCM) connections for corrosion or loose wires.
5
Test the throttle position sensor (TPS) for proper operation.
6
Perform a road test to assess shifting under various driving conditions.

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
•Fluid catch pan

Parts Required

•Transmission fluid (Mercon LV)
•Transmission filter (if applicable)
•Transmission pan gasket
•Throttle position sensor (if needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

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; look for discoloration or burnt smell.
3
Inspect the transmission fluid cooler for leaks or blockages.
4
Examine the transmission control module (TCM) connections for corrosion or loose wires.
5
Test the throttle position sensor (TPS) for proper operation.
6
Perform a road test to assess shifting under various driving conditions.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the negative battery cable to prevent electrical shorts.

2. Check and Change Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick and remove it.
2. Use a funnel to add new transmission fluid if low; check the owner's manual for specifications (typically Mercon LV).
3. If fluid is burnt or dirty, proceed to change the fluid.
4. Remove the transmission pan bolts using a socket wrench.
5. Carefully lower the pan and drain the old fluid into a suitable container.
6. Replace the transmission filter (if applicable) and clean the pan.
7. Reinstall the transmission pan with a new gasket and torque bolts to manufacturer specifications (usually around 12-15 ft-lbs).

3. Inspect and Replace Transmission Control Module (if necessary)

Sub-steps:
1. Locate the TCM, which may be mounted on the transmission or in the engine bay.
2. Unplug the wiring harness from the TCM.
3. Remove the TCM from its mounting position.
4. Install the new TCM (if required) and reconnect the wiring harness.
5. Reconnect the negative battery terminal.

4. Throttle Position Sensor Adjustment

Sub-steps:
1. Locate the TPS attached to the throttle body.
2. Disconnect the TPS connector.
3. Use a multimeter to test the TPS output voltage; it should vary smoothly as the throttle is opened.
4. If the TPS is faulty, replace it and ensure proper alignment during installation.