my Ford Explorer Fifth Generation (2011-2019) runs rough when I accelerate, what’s the fix?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

583 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 rough acceleration issues in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, 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 accessing components.

Symptoms

•Rough engine idle
•Hesitation during acceleration
•Decreased fuel efficiency
•Engine misfire or backfire
•Check engine light illuminated
•Unusual exhaust smoke

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner for any error codes.
2
Inspect the spark plugs for wear or fouling that could cause misfires.
3
Check the air filter for blockages or dirt that might restrict airflow to the engine.
4
Examine fuel injectors for clogs or leaks.
5
Test the fuel pressure to ensure the fuel pump is functioning correctly.
6
Inspect vacuum lines for leaks that could affect engine performance.

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
•Spark plug socket
•Torque wrench
•Ratchet and extensions
•Flathead screwdriver
•Fuel injector cleaning kit
•Basic hand tools
•Fuel pressure gauge
•Safety goggles
•Gloves

Parts Required

•Spark plugs
•Air filter
•Fuel injectors (if needed)
•Fuel pump (if needed)

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Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner for any error codes.
2
Inspect the spark plugs for wear or fouling that could cause misfires.
3
Check the air filter for blockages or dirt that might restrict airflow to the engine.
4
Examine fuel injectors for clogs or leaks.
5
Test the fuel pressure to ensure the fuel pump is functioning correctly.
6
Inspect vacuum lines for leaks that could affect engine performance.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to prevent any electrical shorts during repairs.

2. Inspect and Replace Spark Plugs

Sub-steps:
1. Remove the ignition coil connectors.
2. Unbolt and remove the ignition coils.
3. Using a spark plug socket, remove the spark plugs.
4. Inspect the spark plugs for wear; replace if necessary with OEM or recommended plugs.
5. Gap the new spark plugs according to manufacturer specifications.
6. Install new spark plugs and reattach ignition coils and connectors.
Tools Required:
- Spark plug socket
- Torque wrench
- Ratchet and extensions

3. Clean or Replace Air Filter

Sub-steps:
1. Locate the air intake housing and unclip or unscrew it.
2. Remove the old air filter and inspect for dirt or damage.
3. Clean the air filter housing.
4. Install a new air filter, ensuring it fits securely.
Tools Required:
- Flathead screwdriver (if applicable)

4. Check Fuel Injectors

Sub-steps:
1. Remove the engine cover (if applicable).
2. Disconnect the fuel injector connectors.
3. Use a fuel injector cleaning kit to clean the injectors or replace them if necessary.
4. Reconnect the fuel injectors and their electrical connectors.
Tools Required:
- Fuel injector cleaning kit
- Basic hand tools for disconnecting connectors

5. Test and Replace Fuel Pump (if necessary)

Sub-steps:
1. Access the fuel pump through the access panel or by removing the fuel tank.
2. Connect a fuel pressure gauge to check the pressure.
3. If the pressure is below specifications, replace the fuel pump with a new unit.
4. Reassemble all components and reconnect the battery.
Tools Required:
- Fuel pressure gauge
- Socket set
- Safety goggles and gloves