my Ford Explorer Fifth Generation (2011-2019) won’t accelerate properly what should I check

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

628 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 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 systems
•Allow the engine to cool before working on components

Symptoms

•Check engine light illuminated
•Engine stalling or hesitation during acceleration
•Rough or inconsistent engine idle
•Unusual engine noises during acceleration
•Decreased fuel efficiency
•Transmission slipping or failure to shift properly

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Inspect the throttle body for carbon buildup or obstruction
3
Check the air filter for clogs or excessive dirt
4
Examine the fuel system for proper pressure and flow using a fuel pressure gauge
5
Inspect the transmission fluid level and condition; look for any signs of contamination
6
Test the mass airflow (MAF) sensor and throttle position sensor (TPS) for accurate readings using a multimeter

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
•Throttle body cleaner
•Microfiber cloth
•Fuel pressure gauge
•Multimeter
•Socket set
•Screwdrivers

Parts Required

•Air filter
•Transmission fluid
•Throttle body gasket (if removed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Inspect the throttle body for carbon buildup or obstruction
3
Check the air filter for clogs or excessive dirt
4
Examine the fuel system for proper pressure and flow using a fuel pressure gauge
5
Inspect the transmission fluid level and condition; look for any signs of contamination
6
Test the mass airflow (MAF) sensor and throttle position sensor (TPS) for accurate readings using a multimeter

Solution

1. Preparation

Gather tools and parts needed.
Park the vehicle on a level surface, engage the parking brake, and disconnect the battery to prevent electrical shock.

2. Clean Throttle Body

Tools Required: Throttle body cleaner, microfiber cloth, screwdrivers.
Remove the air intake duct connected to the throttle body.
Spray throttle body cleaner into the throttle body while opening the throttle plate manually.
Wipe away carbon deposits with a microfiber cloth.
Reassemble the air intake duct and reconnect the battery.

3. Replace Air Filter

Tools Required: Screwdrivers (if applicable).
Open the air filter housing by removing any clamps or screws.
Remove the old air filter and inspect the housing for debris.
Install a new air filter that meets OEM specifications.
Secure the housing and ensure all clamps or screws are properly fastened.

4. Fuel System Check

Tools Required: Fuel pressure gauge, safety glasses, rags.
Locate the fuel rail and connect the fuel pressure gauge.
Turn the ignition to the "ON" position without starting the engine and check the fuel pressure reading against manufacturer specifications.
If pressure is low, inspect the fuel pump and fuel filter for issues, replacing as necessary.

5. Transmission Fluid Change

Tools Required: Socket set, transmission fluid, fluid pump.
Locate the transmission fluid pan and remove the drain plug or pan bolts.
Allow old fluid to drain completely and replace the filter as needed.
Reinstall the pan and refill with the appropriate type and amount of transmission fluid per the manufacturer's specifications.

6. Sensor Testing

Tools Required: Multimeter.
Disconnect the MAF sensor and TPS connectors.
Set the multimeter to measure voltage and check for specified values while adjusting throttle position manually.
Replace any sensor that is out of specification according to the service manual.