how to fix rough shifting in Ford F-150 13th Generation (2015-2020)

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

637 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 rough shifting issues in Ford F-150 (2015-2020). 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

•Ensure the vehicle is in park and the parking brake is engaged.
•Use gloves to protect hands from sharp edges.
•Ensure engine is off before disconnecting electrical connectors.
•Use jack stands to support the engine if necessary.

Symptoms

•Jerky or abrupt gear changes during acceleration
•Delayed shifting when accelerating
•Unusual noises during gear transitions (clunking or grinding)
•Engine RPMs fluctuating unexpectedly
•Warning lights illuminated on the dashboard (e.g., check engine light)
•Poor fuel economy

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for any stored error codes.
2
Inspect the transmission fluid level and condition (check for burning smell or discoloration).
3
Check for any signs of leaks in the transmission system.
4
Test the transmission solenoids for proper operation using a multimeter.
5
Inspect the throttle position sensor (TPS) for proper function and calibration.
6
Examine the engine mounts for wear or damage that may cause shifting issues.

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
•Transmission fluid pump
•Catch pan

Parts Required

•Transmission fluid
•Transmission filter
•Gasket for transmission pan
•Transmission solenoids (if necessary)
•Throttle position sensor (if necessary)

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Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for any stored error codes.
2
Inspect the transmission fluid level and condition (check for burning smell or discoloration).
3
Check for any signs of leaks in the transmission system.
4
Test the transmission solenoids for proper operation using a multimeter.
5
Inspect the throttle position sensor (TPS) for proper function and calibration.
6
Examine the engine mounts for wear or damage that may cause shifting issues.

Solution

1. Preparation

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

2. Check and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick and remove it.
2. Check the fluid level; add new transmission fluid if low (use manufacturer-recommended fluid type).
3. If the fluid is dark or smells burnt, drain the old fluid from the transmission pan.
4. Replace the transmission filter and gasket.
5. Refill with new transmission fluid.
Tools Required: Socket set, transmission fluid pump, catch pan.
Safety Warnings: Ensure the vehicle is in park and the parking brake is engaged.

3. Inspect and Replace Transmission Solenoids (if necessary)

Sub-steps:
1. Remove the transmission pan to access the solenoids.
2. Disconnect the electrical connectors from the solenoids.
3. Remove the solenoids using a socket set.
4. Install new solenoids, ensuring they are seated properly.
5. Reassemble the transmission pan with a new gasket and tighten bolts to manufacturer specifications.
Tools Required: Socket set, torque wrench.
Safety Warnings: Use gloves to protect hands from sharp edges.

4. Check Throttle Position Sensor (TPS)

Sub-steps:
1. Locate the TPS on the throttle body.
2. Disconnect the electrical connector.
3. Use a multimeter to check the voltage output while moving the throttle plate.
4. If the voltage output is inconsistent or out of specification, replace the TPS.
Tools Required: Multimeter, screwdriver.
Safety Warnings: Ensure engine is off before disconnecting electrical connectors.

5. Inspect Engine Mounts

Sub-steps:
1. Visually inspect the engine mounts for cracks or excessive wear.
2. If damaged, remove the old mounts using a socket set and replace with new mounts.
3. Tighten to manufacturer specifications to ensure proper alignment.
Tools Required: Socket set, torque wrench.
Safety Warnings: Use jack stands to support the engine if necessary.