🔧 Telluride - Mass Air Flow (MAF) Sensor Replacement

The MAF sensor measures how much air is entering your Telluride’s engine so the computer can add the right amount of fuel. A failing MAF can cause rough idle, hesitation, poor MPG, or check-engine light.

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

---

⚠️ Safety & Precautions

• 🛑 Work on a cool engine so you don’t burn yourself on hot intake parts.
• 🛑 Keep dirt out of the intake tube; don’t drop screws inside.
• 🛑 Do not touch the sensor element inside the MAF; it’s fragile.
• 🛑 Battery disconnect is recommended to prevent accidental shorts: remove the negative terminal first.

---

🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 3/8" drive ratchet
• 6" extension (3/8" drive)
• Torque wrench (inch-pound)
• Phillips #2 screwdriver
• Torx T20 screwdriver
• Flat trim tool
• Nitrile gloves
• Safety glasses

---

🔩 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

---

📋 Before You Begin

• Park on level ground and set the parking brake.
• Open the hood and locate the air box and intake tube (the large black tube going to the engine).
• Disconnect the battery negative terminal using a 10mm socket. Negative comes off first.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Locate the MAF sensor

• Look at the intake tube near the air filter box; the MAF is a small sensor with an electrical plug.
• If needed, move any plastic harness clips out of the way using a flat trim tool.

Step 2: Unplug the MAF electrical connector

• Press the connector lock tab and pull the plug straight back.
• Don’t pull on the wires.

Step 3: Remove the MAF sensor from the intake tube

• Remove the two MAF mounting screws using either a Torx T20 screwdriver or Phillips #2 screwdriver (your Telluride may use either style).
• Carefully pull the sensor straight out. If it feels stuck, gently wiggle it while pulling—do not pry on the plastic housing.
• Remove the old seal/O-ring from the intake tube opening (if it stayed behind) by hand.

Step 4: Install the new MAF sensor and seal

• Install the new MAF sensor O-ring seal onto the sensor (or into the tube groove, whichever matches your part).
• Insert the new MAF sensor straight into the intake tube opening.
• Install and tighten the two screws using the same driver you removed them with.
• Torque to 2-3 Nm (18-27 in-lbs) using an torque wrench (inch-pound). (This is very light—just snug.)

Step 5: Reconnect the electrical connector

• Push the connector onto the sensor until it clicks/locks.

Step 6: Reconnect the battery

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

---

✅ After Repair

• Start the engine and let it idle for 2-3 minutes. The idle may fluctuate briefly while the computer re-learns airflow.
• If you had a check-engine light, clear codes with a scan tool after the repair, then recheck for any returning codes.
• Take a short test drive and confirm there’s no hesitation and no warning lights.
• Double-check the intake tube area for any loose clamps or air leaks (a hissing sound can mean a leak).

---

💰 DIY vs Shop Cost

Shop Cost: $200-$450 (parts + labor)

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

You Save: $120-$200 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.

---

🎯 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.