why does my Ford Explorer Fifth Generation (2011-2019) have poor acceleration

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

624 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 poor acceleration issues 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

•Disconnect the battery before working on electrical systems
•Allow the engine to cool before inspecting the air intake or fuel systems

Symptoms

•Check engine light illuminated
•Engine stalling during acceleration
•Rough idle when stationary
•Unusual engine noises (e.g., knocking or pinging)
•Decreased fuel efficiency
•Hesitation or lag when pressing the accelerator pedal

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Check the fuel pressure using a fuel pressure gauge to ensure the fuel pump is delivering adequate pressure
3
Inspect the air filter for clogs and replace it if necessary
4
Examine the throttle body for dirt or carbon buildup and clean it if required
5
Test the ignition system components, including spark plugs and ignition coils, for proper function
6
Inspect the transmission fluid level and condition; check for any signs of contamination

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
•Fuel pressure gauge
•Socket set
•Torque wrench
•Throttle body cleaner
•Screwdriver
•Clean rags

Parts Required

•New air filter
•New spark plugs
•Transmission fluid (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Check the fuel pressure using a fuel pressure gauge to ensure the fuel pump is delivering adequate pressure
3
Inspect the air filter for clogs and replace it if necessary
4
Examine the throttle body for dirt or carbon buildup and clean it if required
5
Test the ignition system components, including spark plugs and ignition coils, for proper function
6
Inspect the transmission fluid level and condition; check for any signs of contamination

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to ensure safety while working on the electrical components.

2. Clean the Throttle Body

Tools Required: Throttle body cleaner, clean rags, screwdriver.
Remove the air intake duct connected to the throttle body.
Spray the throttle body cleaner onto a clean rag and wipe the interior surfaces of the throttle body to remove carbon buildup.
Reattach the air intake duct securely.

3. Replace Air Filter

Tools Required: Screwdriver (if applicable).
Locate the air filter housing and remove any screws or clips securing it.
Take out the old air filter and replace it with a new one, ensuring it fits snugly.
Reassemble the housing and secure it.

4. Inspect and Replace Spark Plugs

Tools Required: Socket set, torque wrench, spark plug gap tool.
Remove the ignition coil covers (if applicable).
Use a socket to remove the spark plugs and inspect them for wear or carbon buildup.
Replace any faulty spark plugs with new ones, ensuring the gap is set to manufacturer specifications.
Reinstall the ignition coils and covers.

5. Check Fuel System

Tools Required: Fuel pressure gauge, hose clamps.
Attach the fuel pressure gauge to the fuel rail.
Start the engine and monitor the fuel pressure; compare it to the manufacturer's specifications.
If the pressure is low, consider replacing the fuel pump or checking the fuel filter for clogs.

6. Inspect Transmission Fluid

Tools Required: Transmission fluid dipstick, funnel, new transmission fluid (if necessary).
Check the transmission fluid level with the dipstick; ensure the fluid is at the correct level and in good condition (red and clear).
Add new transmission fluid as needed, following the manufacturer's specifications.