Counter TIps: Mass Airflow Sensors

Get All the Parts for the Job

Symptoms of ECM Failure

Do the Job Right

• Obtain trouble codes from computer.  
  Use scan tool or “check engine light” to read codes.

• Check codes to see if MAF sensor is suspect.
  GM Codes 33, 34, or 36 Ford Code 26, 56, 66, or 76

• Determine location of MAF sensor.
  MAF sensors are located in the engine’s air intake duct after the air cleaner.

• Test MAF sensor.
  With car running, tap MAF sensor. If failure occurs, MAF sensor is defective.

• Test MAF sensor wiring.
  With vehicle running, wiggle wire harness. If failure occurs, problem is in MAF sensor wiring.

• Remove MAF sensor from car.
  Check harness and connector for broken wires.

• Remove mounting clamps and o-rings from defective MAF sensor.
  Clamps and o-rings will be used to install new MAF sensor.

• Check air ducts for damage.
  For proper operation, there must be no air leaks.

Avoid Warranty Problems

• Use the installation instructions supplied with every MAF sensor.
  Failure to follow these instructions will void the warranty.

• Make sure all trouble codes are repaired.
  In addition to the bad MAF sensor, there may also be a defective ECM or other sensors.

• Eliminate engine misfiring or backfiring.
  An engine backfire will destroy the new MAF sensor.

• Check engine harnesses and connectors for corrosion and damage.
  Wiggle cables while car is running to see if a fault occurs.

Use CARDONE Mass Airflow Sensors for Long Life & Proven Performance

• CARDONE remanufactures MAF sensors

• The most complete MAF sensor coverage to meet or exceed OE specifications available in the industry

• Every MAF sensor is 100% full function

• Complete installation instructions packed tested under simulated on the car extremes with every CARDONE MAF sensor of temperature, shock, and vibration

• 12 month/18,000 mile warranty

• ASE certified technical service available