🔧 Regal - Mass Air Flow (MAF) Sensor Replacement

The MAF sensor measures how much air is entering your engine so the computer can add the right amount of fuel. If it’s failing or contaminated, your Regal can run rough, hesitate, or turn on the check engine light. Replacement is straightforward and usually doesn’t require special programming.

Difficulty Level: Beginner | Estimated Time: 0.5-1.0 hours

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⚠️ Safety & Precautions

• ⚠️ Let the engine cool before working near the turbo/intake piping.
• ⚠️ Disconnect the negative battery cable to prevent accidental shorts and to help the computer relearn airflow.
• ⚠️ Do not touch the sensing element inside the MAF; it’s delicate and can be ruined easily.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 1/4" drive ratchet
• 3" extension (1/4" drive)
• Flathead screwdriver (small)
• Torx T20 bit
• Torx T25 bit
• Inch-pound torque wrench (20-200 in-lb)
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Mass air flow (MAF) sensor - Qty: 1
• MAF sensor O-ring / seal - Qty: 1
• MAF sensor cleaner spray - Qty: 1

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📋 Before You Begin

• Park on level ground, shift to Park, and set the parking brake.
• Open the hood and let the engine cool for at least 20 minutes.
• Disconnect the battery negative terminal using a 10mm socket and isolate it so it can’t spring back. Negative cable is the black one.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Locate the MAF sensor

• Find the air intake tube coming from the air filter box toward the turbo/inlet.
• The MAF sensor is mounted in the intake tube near the airbox area and has an electrical connector plugged into it.

Step 2: Unplug the MAF electrical connector

• Press the locking tab and pull the connector straight off.
• If it’s stubborn, use a flathead screwdriver (small) to gently lift the lock tab. Don’t pry hard—tabs break easily.

Step 3: Remove the MAF sensor fasteners

• Use a Torx T20 bit (some versions may use Torx T25 bit) with a 1/4" drive ratchet and 3" extension to remove the two screws holding the sensor to the intake tube.
• Set the screws aside where they won’t fall into the engine bay.

Step 4: Remove the MAF sensor from the intake tube

• Pull the sensor straight out of the housing.
• Remove the old MAF sensor O-ring / seal if it stayed in the bore.
• Do not drop or bump the sensor tip.

Step 5: Compare parts and install the new seal

• Compare the old and new MAF sensor so the connector and mounting holes match.
• Install the new MAF sensor O-ring / seal onto the sensor (or into the bore, depending on design).
• If needed, lightly moisten the O-ring with a tiny bit of clean engine oil on a gloved finger so it seats smoothly.

Step 6: Install the new MAF sensor

• Carefully insert the new sensor into the intake tube opening, keeping it straight.
• Install and snug the screws by hand first to avoid cross-threading.
• Tighten using the Torx T20 bit or Torx T25 bit.
• Torque to 3 Nm (27 in-lb) using an inch-pound torque wrench (20-200 in-lb).

Step 7: Reconnect the electrical connector

• Push the connector on until it clicks/locks.
• Gently tug back to confirm it’s fully latched.

Step 8: Reconnect the battery

• Reconnect the negative battery terminal using a 10mm socket.
• Snug the terminal so it doesn’t rotate by hand.

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✅ After Repair

• Start the engine and let it idle for 2-3 minutes. The idle may fluctuate briefly while it relearns.
• Check that the check engine light stays off and that the engine responds smoothly to light throttle.
• If you had a check engine light, clearing codes with a scan tool can speed up recovery. A scan tool is a handheld device that reads/clears trouble codes from the car’s computer.
• Road test for 10-15 minutes with gentle acceleration, then recheck for warning lights.

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💰 DIY vs Shop Cost

Shop Cost: $180-$420 (parts + labor)

DIY Cost: $80-$250 (parts only)

You Save: $100-$170 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.