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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

523 words

Problem Statement

Learn how to diagnose and fix a 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 vehicle is parked on a level surface and the engine is cool before starting work
•Disconnect the battery before working on electrical components
•Allow the engine to cool before inspecting the exhaust system

Symptoms

•Hissing noise that varies with engine RPM
•Loss of power or acceleration
•Possible increase in engine temperature
•Check engine light illuminated
•Unusual changes in fuel economy

Diagnostic Steps

1
Scan for error codes using OBD-II scanner
2
Inspect vacuum lines for leaks, cracks, or disconnections
3
Check the exhaust system for any leaks
4
Examine engine oil, coolant, and transmission fluid levels
5
Pinpoint the location of the hissing sound using a mechanic's stethoscope

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
•Mechanic's stethoscope
•Basic hand tools
•Jack stands

Parts Required

•Replacement vacuum lines
•Replacement gaskets for intake and throttle body
•Exhaust repair tape

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Solution

1. Preparation

Tools Required: OBD-II scanner, mechanic's stethoscope, basic hand tools
Safety Warnings: Ensure the vehicle is parked on a level surface and the engine is cool before starting work.

2. Inspect and Repair Vacuum Lines

Identify: Locate all vacuum lines connected to the intake manifold and other components.
Inspect: Check each line for cracks, wear, or disconnections. Pay special attention to rubber connectors.
Replace: If any damaged lines are found, cut a new piece of vacuum line to the appropriate length and attach it securely.

3. Examine Exhaust System

Lift Vehicle: Use jack stands to safely lift the vehicle if necessary.
Inspect: Check the entire exhaust system, including the manifold, catalytic converter, and muffler, for signs of leaks or damage.
Repair: If leaks are detected, use exhaust tape as a temporary fix or replace damaged sections of the exhaust system as needed.

4. Check Engine Components

Inspect: Check the intake manifold gasket and throttle body gasket for signs of wear or leaks.
Replace if needed: Remove the affected components, clean the surfaces, and install new gaskets according to manufacturer specifications.