why is my Ford Explorer making a hissing sound when I turn the steering wheel?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

546 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 the hissing sound when turning the steering wheel in a Ford Explorer. Step-by-step guide with tools and procedures.

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

•Hissing or whining noise when turning the steering wheel
•Difficulty steering, particularly at low speeds
•Fluid leaks near the power steering pump or rack
•Steering wheel feels stiff or unresponsive
•Check power steering fluid level warning light illuminated

Diagnostic Steps

1
Inspect power steering fluid level using the dipstick or reservoir markings.
2
Check for visible leaks around the power steering pump, hoses, and rack and pinion.
3
Listen to the power steering pump while the steering wheel is being turned to isolate the noise source.
4
Inspect the power steering pump for wear or damage.
5
Examine the condition of the power steering fluid for contamination or aeration.
6
Test the steering system for binding or resistance.

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

•Fluid suction tool
•Funnel
•Clean rags
•Socket set
•Wrench set
•Torque wrench
•Clear hose

Parts Required

•Power steering fluid
•New power steering pump

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Diagnostic Steps

1
Inspect power steering fluid level using the dipstick or reservoir markings.
2
Check for visible leaks around the power steering pump, hoses, and rack and pinion.
3
Listen to the power steering pump while the steering wheel is being turned to isolate the noise source.
4
Inspect the power steering pump for wear or damage.
5
Examine the condition of the power steering fluid for contamination or aeration.
6
Test the steering system for binding or resistance.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is on a level surface and the engine is off.
Disconnect the battery to prevent any electrical issues during the repair.

2. Inspect and Replace Power Steering Fluid

Tools Required: Fluid suction tool, funnel, clean rags.
Remove the cap from the power steering reservoir.
Use the fluid suction tool to extract old power steering fluid from the reservoir.
Replace with manufacturer-recommended power steering fluid.
Recheck the fluid level and ensure it’s within the designated range.

3. Check and Replace Power Steering Pump

Tools Required: Socket set, wrench set, torque wrench, new power steering pump.
Disconnect the hoses from the power steering pump using a wrench, noting their orientation for reinstallation.
Remove the pump mounting bolts and take out the old pump.
Install the new power steering pump, securing it with the bolts to the manufacturer's torque specifications.
Reconnect the hoses to the new pump, ensuring they are tight and leak-free.

4. Bleed Power Steering System

Tools Required: Clear hose (for bleeding), container.
With the engine running, turn the steering wheel fully to the left and then to the right several times.
Monitor the fluid level and add more fluid if necessary, while also checking for air bubbles in the reservoir.
Repeat until no bubbles are visible and the steering feels smooth.