my Ford Explorer Fifth Generation (2011-2019) feels like it’s losing power uphill, why?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

697 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

Diagnose and fix loss of power uphill in Ford Explorer 2011-2019. Step-by-step guide with symptoms, diagnostic steps, tools, and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery to prevent any electrical shorts during the process
•Be cautious of fuel spray when disconnecting fuel lines

Symptoms

•Loss of acceleration when climbing hills
•Engine stalling or hesitation during acceleration
•Unusual engine noises (e.g., knocking, sputtering)
•Poor fuel economy
•Check engine light illuminated
•Increased RPM without corresponding power increase

Diagnostic Steps

1
Scan the vehicle's computer for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Inspect the air filter for clogs or restrictions that may hinder airflow to the engine
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump is delivering adequate pressure
4
Examine the throttle body for carbon buildup or mechanical issues that could affect airflow
5
Inspect the transmission fluid level and condition, as low or dirty fluid can impact transmission performance
6
Test the spark plugs and ignition coils for wear or failure, as they can 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
•Socket set
•Fuel pressure gauge
•Throttle body cleaner
•Torque wrench
•Spark plug socket

Parts Required

•Air filter
•Fuel pump (if needed)
•Throttle body gasket (if removed)
•Spark plugs
•Transmission fluid (if needed)

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Diagnostic Steps

1
Scan the vehicle's computer for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Inspect the air filter for clogs or restrictions that may hinder airflow to the engine
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump is delivering adequate pressure
4
Examine the throttle body for carbon buildup or mechanical issues that could affect airflow
5
Inspect the transmission fluid level and condition, as low or dirty fluid can impact transmission performance
6
Test the spark plugs and ignition coils for wear or failure, as they can affect engine performance

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to prevent any electrical shorts during the process.

2. Clean or Replace Air Filter

Remove the air filter housing cover using a socket set.
Take out the air filter and inspect it for dirt and debris.
If dirty, clean it with compressed air or replace it with a new one.
Reassemble the air filter housing and reconnect any clips.

3. Check and Replace Fuel Pump (if necessary)

Locate the fuel pump access panel (often under the rear seat or in the trunk).
Remove the access panel and disconnect the fuel lines (be cautious of fuel spray).
Unbolt the fuel pump module using a socket set and lift it out.
Replace the fuel pump with a new unit, ensuring to use the correct part for the model.
Reconnect the fuel lines and access panel.

4. Clean Throttle Body

Remove the throttle body from the intake manifold using a socket set.
Use throttle body cleaner and a soft brush to remove carbon buildup inside the throttle body.
Reinstall the throttle body and reconnect any electrical connectors.

5. Check and Replace Spark Plugs

Remove the ignition coil packs using a socket set (note the order for reinstallation).
Unscrew the spark plugs with a spark plug socket.
Inspect the spark plugs for wear and replace them if necessary.
Reinstall new spark plugs to the specified torque (usually around 12-15 ft-lbs) and reattach the ignition coils.

6. Transmission Fluid Check and Change (if necessary)

With the engine running, locate the transmission dipstick.
Check the fluid level and condition; it should be a bright red color.
If low or burnt, drain and replace the fluid using the recommended type (consult the owner’s manual for specifications).
Refill to the proper level and check for leaks.