How to Clean the MAF on a 2003 Audi TT Automatic Trans

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The Mass Airflow Sensor on a 2003 Audi TT -- with automatic or drill sending -- delivers flowing accumulation to the engine's engine curb organisation with a heating surroundings settled in the MAF. The temperature feature by the surroundings determines how much expose the MAF device delivers to the engine. If the MAF device becomes filthy or septic from detritus and dirt, the signal from the MAF crapper cause a difference of ailments, including wrinkled inactivity and a "Check Engine Light" to come on. Check engine lights crapper cause cars to change emissions testing. Cleaning the MAF crapper sometimes cipher these problems.

Difficulty: Moderately Challenging Instructions Things You'll Need

• Phillips screwdriver
• Flathead screwdriver
• Arc render pliers
• MAF cleaner
• Lint liberated rags

• 1

  Open the hood. Disconnect the alternative air-injection tubing that plugs into the lower conception of the air-box by actuation it off.

• 2

  Remove the digit Phillips screws at the rear of the air-box lid. Release the impressible tabs that also stop the air-box palpebra in locate and vanish it.

• 3

  Disconnect the wiring command that plugs into the MAF by imperative on the impressible tab on the block and actuation it off.

• 4

  Remove the digit screws that stop the MAF to the air-box with a Phillips screwdriver. Set the screws aside.

• 5

  Loosen the self-squeeze clamp that holds the turbo recess tube to the MAF with a pair of render pliers. If the clamp has been replaced with conventional tubing clamp, loosen it with a Phillips screwdriver. Push the tube gently out of the way.

• 6

  Pull the MAF gently out of the air-box. This haw verify a lowercase maneuvering to do safely.

• 7

  Spray MAF preparation -- available at an machine parts accumulation -- on the glass screen, device and block Atlantic of the MAF. Most of the preparation will evaporate. Wipe some excess preparation soured with a lint-free rag.

• 8

  Reinstall the MAF in the air-box. Plug in the turbo recess pipe. Connect the wiring harness. Reinstall the alternative air-injection hose. Reinstall the screws that stop the air-box palpebra in locate and ensure that impressible tabs are retentive it securely in place.

Car Repair & Maintenance