why does my Ford F-150 13th Generation (2015-2020) transmission jerk when shifting

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

573 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 jerking 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

•Disconnect the battery before working on electrical components.
•Allow the engine to cool before opening the transmission system to prevent burns.

Symptoms

•Jerking or harsh shifting between gears
•Delay in engagement when shifting from park to drive/reverse
•Check engine light illuminated
•Unusual noises during shifting (clunking or grinding)
•Poor acceleration following shifts
•Transmission fluid leaks under the vehicle

Diagnostic Steps

1
Scan the vehicle's onboard computer for any error codes using an OBD-II scanner.
2
Check the transmission fluid level and condition (color and smell).
3
Inspect the transmission fluid filter for clogs or contamination.
4
Examine wiring and connectors to the transmission solenoids for damage or corrosion.
5
Test the transmission control module (TCM) for proper operation and communication with other systems.
6
Perform a road test to replicate the jerking issue and note specific conditions (speed, load, etc.).

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
•Socket set
•Torque wrench
•Multimeter

Parts Required

•Transmission fluid (Ford Mercon LV)
•Transmission filter
•Gasket for transmission pan
•Solenoids (if needed)

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Diagnostic Steps

1
Scan the vehicle's onboard computer for any error codes using an OBD-II scanner.
2
Check the transmission fluid level and condition (color and smell).
3
Inspect the transmission fluid filter for clogs or contamination.
4
Examine wiring and connectors to the transmission solenoids for damage or corrosion.
5
Test the transmission control module (TCM) for proper operation and communication with other systems.
6
Perform a road test to replicate the jerking issue and note specific conditions (speed, load, etc.).

Solution

1. Preparation

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

2. Check and Replace Transmission Fluid

Tools Required: Transmission fluid pump, funnel, socket set, torque wrench.
Sub-steps:
1. Locate the transmission dipstick and remove it to check fluid level.
2. If low, use a transmission fluid pump to add the correct type of fluid (Ford Mercon LV).
3. If fluid is discolored or burnt, proceed to replace the fluid.
4. Remove the transmission pan by unscrewing the bolts; be prepared for fluid spillage.
5. Replace the transmission filter and clean the pan thoroughly. Install a new gasket.
6. Reattach the pan with bolts torqued to manufacturer specifications (typically 10-12 ft-lbs).

3. Inspect and Replace Transmission Solenoids

Tools Required: Socket set, multimeter.
Sub-steps:
1. Remove the transmission pan (if not already done).
2. Locate the solenoids and disconnect the wiring harness.
3. Test each solenoid with a multimeter for proper resistance.
4. If any solenoids are faulty, replace them with OEM components.
5. Reconnect the wiring harness and reassemble the transmission pan.

4. Reprogram TCM (if necessary)

Tools Required: OBD-II scanner with programming capability.
Sub-steps:
1. Connect the OBD-II scanner to the vehicle’s diagnostic port.
2. Follow the scanner prompts to access the TCM settings.
3. Reprogram or reset the TCM as per manufacturer guidelines.
4. Perform a road test to ensure that the transmission shifts smoothly.