why does my Ford Explorer feel jerky when I accelerate

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

478 words

Problem Statement

Learn how to diagnose and fix jerky acceleration 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 the battery before working on electrical components.
•Allow the engine to cool before opening any components.

Symptoms

•Jerky or harsh acceleration
•Engine hesitations or stalling
•Increased engine RPMs without proportional acceleration
•Poor fuel economy
•Transmission slipping or delayed shifts

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any underlying issues.
2
Inspect the transmission fluid level and condition; check for discoloration or burnt smell.
3
Check for vacuum leaks in the intake system that may affect engine performance.
4
Inspect spark plugs and ignition coils for wear or failure.
5
Test the throttle position sensor (TPS) for proper operation.
6
Evaluate the mass airflow sensor (MAF) for dirt or malfunction.

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
•Torque wrench
•Drain pan
•Spark plug socket

Parts Required

•Transmission fluid (as specified in the owner’s manual)
•Spark plugs
•Throttle position sensor (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any underlying issues.
2
Inspect the transmission fluid level and condition; check for discoloration or burnt smell.
3
Check for vacuum leaks in the intake system that may affect engine performance.
4
Inspect spark plugs and ignition coils for wear or failure.
5
Test the throttle position sensor (TPS) for proper operation.
6
Evaluate the mass airflow sensor (MAF) for dirt or malfunction.

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.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick; remove and wipe clean.
2. Insert the dipstick back and check the fluid level; add fluid if low.
3. If fluid is low or burnt, drain the transmission fluid using a drain pan.
4. Replace with the manufacturer-recommended transmission fluid (consult owner’s manual for specifications).
5. Reinstall the drain plug and refill to the proper level using the dipstick.

3. Inspect and Replace Spark Plugs

Sub-steps:
1. Remove the engine cover if applicable.
2. Disconnect the ignition coils from the spark plugs.
3. Use a spark plug socket to remove each spark plug.
4. Inspect for wear; replace if necessary with OEM specifications.
5. Reinstall ignition coils and cover.

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

Sub-steps:
1. Locate the throttle position sensor on the throttle body.
2. Disconnect the wiring harness from the sensor.
3. Remove the sensor using appropriate tools.
4. Install the new throttle position sensor, ensuring it is properly seated.
5. Reconnect the wiring harness.