my Ford Explorer has trouble accelerating from a stop what's causing it

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

511 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 transmission slipping issues in Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

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 replacing the fuel filter.

Symptoms

•Hesitation or lag when pressing the accelerator
•Engine stalling during acceleration
•Rough or uneven engine performance
•Check engine light illuminated
•Poor fuel economy
•Transmission slipping or delayed shifting

Diagnostic Steps

1
Scan the vehicle's computer using an OBD-II scanner for any stored error codes.
2
Check the transmission fluid level and condition; look for discoloration or burnt smell.
3
Inspect the throttle body for carbon buildup or obstructions.
4
Test the fuel pressure using a fuel pressure gauge to ensure proper delivery.
5
Examine ignition components such as spark plugs and ignition coils for wear.
6
Check for vacuum leaks in hoses and intake manifold.

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
•Soft cloth
•Fuel pressure gauge
•Spark plug socket
•Line wrench
•Torque wrench

Parts Required

•Fuel filter
•Spark plugs
•Transmission fluid (if needed)

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Diagnostic Steps

1
Scan the vehicle's computer using an OBD-II scanner for any stored error codes.
2
Check the transmission fluid level and condition; look for discoloration or burnt smell.
3
Inspect the throttle body for carbon buildup or obstructions.
4
Test the fuel pressure using a fuel pressure gauge to ensure proper delivery.
5
Examine ignition components such as spark plugs and ignition coils for wear.
6
Check for vacuum leaks in hoses and intake manifold.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Clean Throttle Body

Remove the air intake duct connected to the throttle body.
Using a throttle body cleaner and a soft cloth, clean the throttle body thoroughly, removing any carbon buildup.
Reinstall the air intake duct and reconnect any sensors.

3. Check and Replace Fuel Filter

Locate the fuel filter (refer to vehicle manual for exact location).
Relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
Disconnect fuel lines from the filter using a line wrench.
Replace the old filter with a new one, ensuring proper orientation.
Reconnect fuel lines and install the fuel pump fuse.

4. Inspect and Replace Spark Plugs

Remove the ignition coils or spark plug wires.
Use a spark plug socket to remove old spark plugs.
Inspect for wear or fouling; replace with new spark plugs to manufacturer specifications (consult the manual for gap settings).
Reinstall ignition coils or spark plug wires securely.

5. Check Transmission Fluid

Remove the transmission dipstick and check fluid level.
If low, add the appropriate ATF fluid as specified in the owner's manual.
If fluid appears burnt or contaminated, consider a transmission fluid flush.