why does my Ford Explorer Fifth Generation (2011-2019) make a hissing noise when accelerating

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

491 words

Problem Statement

Learn how to diagnose and fix the hissing noise during acceleration in Ford Explorer (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

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 inspecting the exhaust system.

Symptoms

•Hissing noise when accelerating
•Decreased engine performance
•Check engine light illuminated
•Possible rough idle
•Increased fuel consumption

Diagnostic Steps

1
Inspect the intake system for any visible cracks or loose connections.
2
Check for vacuum leaks using a smoke machine or by visually inspecting hoses and connections.
3
Scan the vehicle's OBD-II system for any error codes related to the engine or emissions.
4
Examine the condition of the air filter and the air intake duct for blockages.
5
Inspect the exhaust system for leaks, especially at joints and connections.
6
Test the operation of the throttle body for proper opening and closing.

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
•Smoke machine
•Socket set
•Torque wrench
•Throttle body cleaner

Parts Required

•Intake hoses (if damaged)
•Gaskets for throttle body and exhaust components
•Air filter (if necessary)

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Diagnostic Steps

1
Inspect the intake system for any visible cracks or loose connections.
2
Check for vacuum leaks using a smoke machine or by visually inspecting hoses and connections.
3
Scan the vehicle's OBD-II system for any error codes related to the engine or emissions.
4
Examine the condition of the air filter and the air intake duct for blockages.
5
Inspect the exhaust system for leaks, especially at joints and connections.
6
Test the operation of the throttle body for proper opening and closing.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Disconnect the negative terminal of the battery to ensure safety while working on the vehicle.

2. Inspect and Repair Intake System

Check for Leaks:
- Use a smoke machine to identify any vacuum leaks in the intake hoses.
- Replace any damaged hoses or connections.
Clean the Throttle Body:
- Remove the throttle body from the intake manifold.
- Clean it using throttle body cleaner and a soft brush.
- Reinstall the throttle body and torque the bolts to the manufacturer’s specification (typically around 89 in-lbs).

3. Inspect and Repair Exhaust System

Examine Exhaust Components:
- Inspect all exhaust pipes and joints for any signs of leaks or damage.
- Replace any faulty gaskets or clamps as necessary.
Check Exhaust Manifold:
- Ensure the exhaust manifold is properly secured and not cracked.
- Replace any damaged components and torque to specifications.

4. Final Assembly and Testing

Reconnect the negative terminal of the battery.
Start the vehicle and listen for any hissing sounds.
Test drive the vehicle to ensure the noise has been resolved and monitor for any warning lights.