why does my Ford Explorer hesitate when I press the gas pedal

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

557 words

Problem Statement

Learn how to diagnose and fix hesitation issues in Ford Explorer. 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 inspecting the throttle body or spark plugs.

Symptoms

•Engine stalling during acceleration
•Loss of power when attempting to accelerate
•Rough idle when the engine is running
•Check engine light illuminated
•Poor fuel economy
•Unusual noises from the engine during acceleration

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the throttle body for carbon buildup or obstructions.
3
Check the fuel pressure using a fuel pressure gauge to ensure the fuel pump is delivering adequate pressure.
4
Examine the air filter for clogs and replace if necessary.
5
Inspect the spark plugs for wear and replace if they're fouled or damaged.
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
•Screwdriver set
•Fuel pressure gauge
•Socket set
•Torque wrench
•Vacuum gauge

Parts Required

•New spark plugs
•Throttle body cleaner
•Fuel filter (if required)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the throttle body for carbon buildup or obstructions.
3
Check the fuel pressure using a fuel pressure gauge to ensure the fuel pump is delivering adequate pressure.
4
Examine the air filter for clogs and replace if necessary.
5
Inspect the spark plugs for wear and replace if they're fouled or damaged.
6
Check for vacuum leaks in hoses and intake manifold.

Solution

1. Preparation

Tools Required: OBD-II scanner, screwdriver set, fuel pressure gauge, socket set, torque wrench, vacuum gauge
Disconnect the battery to ensure safety during repairs.

2. Clean Throttle Body

Sub-steps:
1. Remove the air intake duct connected to the throttle body using a socket set.
2. Disconnect the throttle position sensor connector.
3. Use throttle body cleaner and a soft cloth to clean the throttle plate and surrounding area.
4. Reattach the throttle position sensor connector and air intake duct.
5. Reconnect the battery.

3. Test Fuel Pressure

Sub-steps:
1. Locate the fuel rail on the engine.
2. Connect the fuel pressure gauge to the service port on the fuel rail.
3. Start the engine and observe the fuel pressure reading (should be within the manufacturer specifications).
4. If pressure is low, further investigate the fuel pump and filter.

4. Replace Spark Plugs

Sub-steps:
1. Remove the ignition coil(s) from the spark plug wells.
2. Use a socket set to remove the old spark plugs.
3. Inspect the old plugs for wear and ensure the gap is correct on the new plugs.
4. Install new spark plugs and torque them to the manufacturer’s specifications.
5. Reattach the ignition coil(s).

5. Check for Vacuum Leaks

Sub-steps:
1. With the engine running, use a vacuum gauge to check the intake manifold vacuum.
2. Listen for hissing sounds which may indicate a leak.
3. Inspect all hoses and connections for cracks or disconnections and replace as necessary.