why is my Ford F-150 steering assistance intermittent

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

618 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 intermittent steering assistance in Ford F-150. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Steering

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 power steering reservoir.

Symptoms

•Intermittent loss of power steering assistance
•Steering wheel feels heavy or difficult to turn
•Power steering warning light illuminated on the dashboard
•Noisy power steering pump when assistance is lost
•Increased effort required to maneuver at low speeds

Diagnostic Steps

1
Scan the vehicle's computer using an OBD-II scanner to check for any error codes related to the power steering system.
2
Inspect the power steering fluid level and condition; look for contamination or leaks.
3
Check the power steering pump for any signs of damage or wear.
4
Inspect the steering rack and associated components for leaks or physical damage.
5
Test the electrical connections to the power steering control module to ensure proper operation.
6
Perform a voltage drop test on the power steering motor to check for electrical 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
•Fluid catch pan
•Basic hand tools (sockets, wrenches)
•Multimeter

Parts Required

•Power steering fluid
•Power steering pump (if damaged)
•Steering rack (if damaged)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's computer using an OBD-II scanner to check for any error codes related to the power steering system.
2
Inspect the power steering fluid level and condition; look for contamination or leaks.
3
Check the power steering pump for any signs of damage or wear.
4
Inspect the steering rack and associated components for leaks or physical damage.
5
Test the electrical connections to the power steering control module to ensure proper operation.
6
Perform a voltage drop test on the power steering motor to check for electrical issues.

Solution

1. Preparation

Tools Required: OBD-II scanner, fluid catch pan, basic hand tools (sockets, wrenches), multimeter.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to prevent any electrical shorts during repairs.

2. Check and Replace Power Steering Fluid

Sub-steps:
1. Locate the power steering reservoir and remove the cap.
2. Use a fluid catch pan to drain old power steering fluid if contaminated.
3. Inspect the fluid condition; if dark or foamy, replace it.
4. Refill with manufacturer-recommended power steering fluid to the appropriate level.

3. Inspect and Replace Power Steering Pump

Sub-steps:
1. Remove any components obstructing access to the power steering pump (e.g., belts).
2. Disconnect the hoses from the pump and cap them to prevent fluid leaks.
3. Unbolt the power steering pump from its mounting bracket.
4. Install the new power steering pump, ensuring it is securely mounted.
5. Reconnect the hoses and refill the power steering fluid.

4. Inspect and Repair Steering Rack

Sub-steps:
1. Raise the vehicle securely using jack stands and remove the front wheels for access.
2. Inspect the steering rack for any leaks or physical damage.
3. If damaged, remove the steering rack by disconnecting the mounting bolts and tie rod ends.
4. Install the new steering rack and ensure all connections are tightened to manufacturer specifications.
5. Reinstall the front wheels and lower the vehicle.

5. Check Electrical Connections

Sub-steps:
1. Inspect the wiring harness and connectors going to the power steering control module.
2. Clean any corrosion from the terminals and ensure tight connections.
3. Use a multimeter to test for proper voltage at the power steering motor when the vehicle is on.