Warning Signs the Air Flow Meter is Failing
- Reduced engine power or acceleration
- Poor fuel economy
- Rough idling or stalling
- Check Engine Light is on
- Engine hesitation or misfires
How to Test if This Part is the Problem
- Visually inspect the part for damage or contamination. Look for cracks, broken wires, or debris.
- Use a scan tool to check for diagnostic trouble codes (DTCs) related to the air flow meter.
- Check the wiring harness and connector for loose connections or corrosion.
- Test the part's voltage and resistance using a multimeter, comparing the readings to the manufacturer's specifications.
- Consider smoke testing the intake system for leaks, as unmetered air can mimic a faulty air flow meter.
Common Failure Causes for This Part
- Contamination from a dirty air filter
- Physical damage from impact or vibration
- Electrical issues, such as shorts or open circuits
- Age and normal wear and tear
- Oil or other fluids entering the sensor