my Ford F-150 jerks when shifting gears what's wrong

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

604 words

Problem Statement

Learn how to diagnose and fix jerking during gear shifts in Ford F-150. 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

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening the transmission system to avoid burns from hot fluids.

Symptoms

•Jerking or bumping sensation during gear shifts
•Delayed engagement when shifting from park to drive or reverse
•Harsh shifting or slipping between gears
•Engine RPM fluctuations during shifts
•Check engine light may be illuminated

Diagnostic Steps

1
Scan the vehicle's onboard diagnostic system using an OBD-II scanner to check for error codes.
2
Inspect transmission fluid level and condition; check for contamination or burnt smell.
3
Examine the transmission linkage for misalignment or wear.
4
Test the throttle position sensor (TPS) with a multimeter to ensure proper operation.
5
Check for vacuum leaks in the intake system that might affect engine performance.
6
Inspect engine mounts for wear or damage that may cause excessive movement during shifting.

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
•Transmission fluid pump
•Fluid catch pan
•Multimeter
•Socket set
•Screwdriver
•Jack
•Jack stands

Parts Required

•Transmission fluid (as per manufacturer specification)
•Transmission filter (if applicable)
•Throttle position sensor (if defective)
•Engine mounts (if damaged)

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Diagnostic Steps

1
Scan the vehicle's onboard diagnostic system using an OBD-II scanner to check for error codes.
2
Inspect transmission fluid level and condition; check for contamination or burnt smell.
3
Examine the transmission linkage for misalignment or wear.
4
Test the throttle position sensor (TPS) with a multimeter to ensure proper operation.
5
Check for vacuum leaks in the intake system that might affect engine performance.
6
Inspect engine mounts for wear or damage that may cause excessive movement during shifting.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and the engine is turned off.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Transmission Fluid Change

Tools Required: Transmission fluid pump, fluid catch pan, socket set, funnel.
Sub-steps:
1. Place the fluid catch pan under the transmission pan.
2. Remove the transmission pan bolts using a socket wrench and carefully lower the pan.
3. Inspect the old fluid for debris or burnt smell; discard appropriately.
4. Replace the transmission filter if applicable, ensuring the new filter aligns correctly.
5. Reinstall the transmission pan with a new gasket and torque the bolts to the manufacturer’s specification (usually around 10-12 ft-lbs).
6. Refill the transmission with the manufacturer-recommended fluid through the dipstick tube using a funnel.

3. Throttle Position Sensor (TPS) Adjustment

Tools Required: Multimeter, screwdriver.
Sub-steps:
1. Locate the TPS on the throttle body.
2. Disconnect the electrical connector from the TPS.
3. Use a multimeter to test the resistance; it should vary smoothly as the throttle is opened.
4. If out of range, remove the TPS and adjust or replace it as necessary.
5. Reconnect the electrical connector and clear any stored error codes with the OBD-II scanner.

4. Check Engine Mounts

Tools Required: Jack, jack stands, socket set.
Sub-steps:
1. Safely lift the front of the vehicle and support it with jack stands.
2. Inspect the engine mounts for cracks or excessive wear.
3. If damaged, remove the mounting bolts and replace the engine mount with a new one, ensuring proper alignment.
4. Lower the vehicle and recheck for any jerking upon shifting.