why does my Ford Explorer Fifth Generation (2011-2019) make a hissing sound

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

574 words

Problem Statement

Learn how to diagnose and fix the hissing sound in Ford Explorer Fifth Generation (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

•Ensure the engine is cool before working to avoid burns.
•Disconnect the battery to ensure safety while working on electrical components.
•Allow engine to cool before opening the radiator cap.

Symptoms

•Hissing sound when the engine is running or during acceleration
•Decrease in engine performance or power
•Increased engine temperature
•Unusual changes in fuel economy
•Check engine light may illuminate

Diagnostic Steps

1
Inspect the engine bay for any visible signs of leaks, particularly around vacuum hoses and the intake manifold.
2
Use an OBD-II scanner to check for any stored error codes that could indicate a malfunction.
3
Listen closely to identify the exact location of the hissing sound (e.g., near the engine, intake, or exhaust).
4
Check the condition of the vacuum hoses for cracks or disconnections.
5
Inspect the coolant system for any leaks, particularly from the radiator or water pump.
6
Assess the air intake system for any signs of damage or loose connections.

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
•Pliers
•Screwdriver set
•Throttle body cleaner
•Coolant
•Hose cutter
•Funnel
•Hose clamps

Parts Required

•Vacuum hoses
•Intake duct or clamps (if damaged)
•Coolant (as needed)

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Diagnostic Steps

1
Inspect the engine bay for any visible signs of leaks, particularly around vacuum hoses and the intake manifold.
2
Use an OBD-II scanner to check for any stored error codes that could indicate a malfunction.
3
Listen closely to identify the exact location of the hissing sound (e.g., near the engine, intake, or exhaust).
4
Check the condition of the vacuum hoses for cracks or disconnections.
5
Inspect the coolant system for any leaks, particularly from the radiator or water pump.
6
Assess the air intake system for any signs of damage or loose connections.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the engine is cool.
Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace Vacuum Hoses

Sub-steps:
1. Locate all vacuum hoses in the engine bay.
2. Check each hose for cracks, breaks, or loose connections.
3. If any damaged hoses are found, remove the old hose by loosening any clamps.
4. Replace with new vacuum hose, ensuring a snug fit and secure the clamp.
Tools Required: Pliers, hose cutter
Safety Warnings: Ensure the engine is cool before working to avoid burns.

3. Check and Repair the Intake System

Sub-steps:
1. Inspect the air intake duct for any signs of damage or disconnection.
2. Remove the intake duct if necessary to examine the throttle body.
3. Clean the throttle body using throttle body cleaner if dirt buildup is present.
4. Reattach the intake duct securely.
Tools Required: Screwdriver set, throttle body cleaner
Safety Warnings: Ensure the engine is off and cool.

4. Inspect and Repair the Cooling System

Sub-steps:
1. Check the coolant reservoir and radiator for leaks.
2. If leaks are detected, replace the faulty component (e.g., hoses, radiator).
3. Refill the cooling system with the appropriate coolant type as specified in the owner's manual.
4. Bleed the cooling system to remove any air pockets.
Tools Required: Coolant, funnel, hose clamps
Safety Warnings: Allow engine to cool before opening the radiator cap.