my Ford Explorer Fifth Generation (2011-2019) loses power when going uphill, what's wrong?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

599 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

Discover how to diagnose and fix loss of power when going uphill in Ford Explorer 2011-2019. Step-by-step guide with symptoms, diagnostics, and repairs.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Relieve fuel system pressure before disconnecting fuel components.

Symptoms

•Engine hesitation or stalling during acceleration
•Check engine light illuminated
•Poor fuel economy
•Unusual noises from the engine (e.g., knocking or pinging)
•Engine overheating while climbing

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner and document any codes present.
2
Inspect the air filter for clogs or restrictions and replace if necessary.
3
Check fuel pressure with a fuel pressure gauge to ensure adequate fuel delivery.
4
Examine the throttle position sensor (TPS) for proper operation using a multimeter.
5
Inspect the catalytic converter for blockages or restrictions.
6
Assess the transmission fluid level and condition; check for signs of burning or 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
•Multimeter
•Socket set
•Line wrench
•Torque wrench

Parts Required

•Air filter
•Fuel filter
•Throttle position sensor (if replacement is necessary)
•Transmission fluid (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner and document any codes present.
2
Inspect the air filter for clogs or restrictions and replace if necessary.
3
Check fuel pressure with a fuel pressure gauge to ensure adequate fuel delivery.
4
Examine the throttle position sensor (TPS) for proper operation using a multimeter.
5
Inspect the catalytic converter for blockages or restrictions.
6
Assess the transmission fluid level and condition; check for signs of burning or contamination.

Solution

1. Preparation

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

2. Replace Air Filter

Locate the air filter housing and remove the screws or clips.
Take out the old air filter and clean the housing with a damp cloth.
Install the new air filter, ensuring it fits snugly in place.
Reattach the housing and secure it with screws or clips.

3. Check and Replace Fuel Filter (if necessary)

Locate the fuel filter (usually along the fuel line).
Relieve fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.
Disconnect the fuel lines from the filter using a line wrench.
Replace the old filter with a new one, ensuring the flow direction is correct.
Reconnect the fuel lines securely.

4. Inspect and Replace Throttle Position Sensor (if faulty)

Disconnect the electrical connector from the TPS.
Remove the screws securing the TPS to the throttle body.
Install the new TPS in the same position as the old one and secure it with screws.
Reconnect the electrical connector.

5. Test the Catalytic Converter

If blockage is suspected, temporarily remove the exhaust pipe before the catalytic converter and start the engine to check for excessive backpressure.
If excessive backpressure is noted, replace the catalytic converter.

6. Transmission Fluid Inspection and Replacement (if needed)

Locate the transmission dipstick and check the fluid level; add fluid if low.
If the fluid is dark or smells burnt, drain and replace the transmission fluid using the proper type specified in the owner's manual.
Refill with new fluid and check for leaks.