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how to fix poor fuel economy on Ford F-150 13th Generation (2015-2020) - Ford F-150
Home/Cars/Ford/F-150/13th Generation (2015-2020)/how to fix poor fuel economy on Ford F-150 13th Generation (2015-2020)

how to fix poor fuel economy on Ford F-150 13th Generation (2015-2020)

Ford F-150 13th Generation (2015-2020)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
570 words

Problem Statement

Learn how to diagnose and fix poor fuel economy issues in Ford F-150 13th Generation (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component
Fuel System
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 inspecting or working on the fuel system.

Symptoms

  • •Decreased miles per gallon (MPG)
  • •Rough idling or engine misfires
  • •Check engine light illuminated
  • •Loss of engine power during acceleration
  • •Unusual exhaust emissions (black smoke)
  • •Increased frequency of refueling

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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
  • •Fuel pressure gauge
  • •Screwdriver set
  • •Tire pressure gauge

Parts Required

  • •Air filter
  • •Mass air flow sensor (if necessary)
  • •Oxygen sensors (as needed)
  • •Fuel filter (if necessary)

Additional Information

Affected Component
Fuel System
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
5 items
Parts Required
4 items

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Solution
1. Preparation
  • Gather required tools and parts.
  • Ensure the vehicle is parked on a level surface and the engine is cool.
  • Disconnect the battery to ensure safety while working on electrical components.
2. Replace Air Filter
  • Remove the air filter housing cover using a socket set.
  • Take out the old air filter.
  • Install the new air filter, ensuring it fits snugly.
  • Reattach the housing cover and secure it with the screws.
3. Clean or Replace MAF Sensor
  • Locate the MAF sensor in the intake system.
  • Disconnect the electrical connector and remove the sensor using a screwdriver.
  • Clean the MAF sensor with a specialized cleaner; let it dry completely.
  • If damaged, replace the MAF sensor with a new one.
  • Reinstall the sensor and reconnect the electrical connector.
4. Test and Replace Oxygen Sensors (if necessary)
  • Locate the upstream and downstream oxygen sensors in the exhaust system.
  • Disconnect the wiring harness and remove the sensors using an oxygen sensor socket.
  • Install new oxygen sensors, ensuring they are properly torqued to manufacturer specifications.
  • Reconnect the wiring harness.
5. Fuel System Inspection
  • Connect a fuel pressure gauge to the fuel rail.
  • Start the engine and check that the fuel pressure meets specifications (consult service manual).
  • If pressure is low, inspect the fuel pump and filter for blockages or failure; replace as necessary.
6. Tire Maintenance
  • Check tire pressure using a tire gauge and inflate to the manufacturer-recommended levels.
  • Inspect tire tread for wear; replace tires if tread depth is below legal limits.