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Home/Cars/Ford/Explorer/Fifth Generation (2011-2019)/my Ford Explorer makes a knocking noise when I accelerate what's wrong

my Ford Explorer makes a knocking noise when I accelerate what's wrong

Ford Explorer Fifth Generation (2011-2019)

Severity: mediumDifficulty: medium2-4 hours
3 min read
431 words

Problem Statement

Diagnose and fix knocking noise during acceleration in Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Component
Engine
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems.
  • ⚠Allow the engine to cool before performing any inspections.

Symptoms

  • •Knocking noise upon acceleration
  • •Possible vibration felt in the vehicle
  • •Loss of power during acceleration
  • •Engine misfire or rough running
  • •Check engine light may be illuminated

Diagnostic Steps

  1. 1Inspect the engine oil level and condition.
  2. 2Scan for error codes using an OBD-II scanner.
  3. 3Listen for the location of the knocking noise (engine bay vs. undercarriage).
  4. 4Check for loose or damaged engine mounts.
  5. 5Inspect the drive shaft and CV joints for wear or damage.
  6. 6Examine the exhaust system for loose components.

Solution

Solution

1. Preparation

  • Ensure the vehicle is parked on a level surface and the engine is turned off.
  • Gather necessary tools and parts.

2. Engine Oil Check

  • Remove the dipstick and wipe it clean.
  • Reinsert the dipstick and pull it out to check the oil level.
  • If low, add the recommended oil type for your Ford Explorer.

3. Inspect Engine Mounts

  • Use a socket set to remove any fasteners securing the engine cover (if applicable).
  • Visually inspect the engine mounts for cracks or separation.
  • If damaged, replace the engine mounts with new ones.

4. Drive Shaft and CV Joint Inspection

  • Lift the vehicle using a jack and secure it with jack stands.
  • Inspect the drive shaft for any visible damage or play.
  • Check the CV joints for torn boots or excessive movement.
  • Replace any damaged components as necessary.

5. Exhaust System Check

  • Inspect the exhaust system for loose heat shields or broken hangers.
  • Tighten any loose bolts or replace broken mounts.
  • If necessary, replace damaged exhaust components.

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
  • Jack and jack stands
  • Torque wrench

Parts Required

  • Engine mounts (if replacement is needed)
  • Drive shaft or CV joint components (if damaged)

Additional Information

Component

Engine

Repair Time

2-4 hours

Difficulty

medium

Severity

medium

Tools

4 items

Parts

2 items

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