how to troubleshoot my Ford Explorer Sixth Generation (2020-present) if it won't accelerate

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

571 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 troubleshoot and fix acceleration issues in Ford Explorer (2020-present). Step-by-step guide with diagnostic steps and solutions.

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 inspecting the intake or fuel system.

Symptoms

•Engine revs but the vehicle does not accelerate
•Check engine light illuminated
•Unusual noises from the engine or transmission
•Poor fuel economy
•Transmission slipping or harsh shifting
•Vehicle stalling during acceleration

Diagnostic Steps

1
Scan the vehicle's onboard computer for error codes using an OBD-II scanner.
2
Check the throttle position sensor for proper operation.
3
Inspect the air intake system for blockages or leaks.
4
Verify the fuel pressure to ensure the fuel pump and filter are functioning correctly.
5
Examine the transmission fluid level and condition.
6
Test the mass air flow (MAF) sensor for accuracy.

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
•Multimeter
•Fuel pressure gauge
•Throttle body cleaner
•Socket set

Parts Required

•Throttle position sensor (if faulty)
•Fuel pump and/or filter (if needed)
•Mass air flow sensor (if faulty)

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Diagnostic Steps

1
Scan the vehicle's onboard computer for error codes using an OBD-II scanner.
2
Check the throttle position sensor for proper operation.
3
Inspect the air intake system for blockages or leaks.
4
Verify the fuel pressure to ensure the fuel pump and filter are functioning correctly.
5
Examine the transmission fluid level and condition.
6
Test the mass air flow (MAF) sensor for accuracy.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the negative battery terminal to avoid electrical shorts.

2. Check Throttle Position Sensor

Locate the throttle body and the throttle position sensor.
Disconnect the sensor's electrical connector.
Use a multimeter to test the resistance across the sensor terminals as per manufacturer specifications.
If the readings are off, replace the throttle position sensor.

3. Inspect the Air Intake System

Remove the air intake duct to access the throttle body.
Inspect for any blockages or signs of damage in the duct and throttle body.
Clean the throttle body using throttle body cleaner and a clean cloth.
Reassemble the intake duct securely.

4. Verify Fuel System

Connect a fuel pressure gauge to the fuel rail test port.
Turn the ignition to the "ON" position without starting the engine and check the fuel pressure.
Compare the reading with the manufacturer's specifications (typically between 30-45 psi).
If the fuel pressure is low, inspect or replace the fuel pump and filter.

5. Check Transmission Fluid

Locate the transmission dipstick and remove it.
Wipe it clean and reinsert it to check the fluid level.
If low, add the correct type of transmission fluid as specified in the owner’s manual.
If the fluid is dark or smells burnt, consider a transmission fluid change.

6. Test Mass Air Flow Sensor

Disconnect the MAF sensor and use a multimeter to measure the voltage output while the engine is running.
If readings are inconsistent or outside manufacturer specifications, replace the MAF sensor.