🔧 Odyssey - Serpentine Belt Replacement

The serpentine belt (also called the drive belt) spins key accessories like the alternator and A/C. Replacing a worn or cracked belt prevents squealing, charging problems, and sudden belt failure.

Assumption: Stock accessory drive layout with an automatic belt tensioner.

Difficulty Level: Intermediate | Estimated Time: 1.0-2.0 hours

---

⚠️ Safety & Precautions

• ⚠️ Work on a cool engine; keep hands clear of fans and pulleys.
• ⚠️ Support your Odyssey with jack stands; never rely on a floor jack.
• ⚠️ Keep the key away from the vehicle so nobody can start it.
• ⚠️ Do not put fingers between the belt and pulleys while releasing the tensioner.
• ⚠️ Battery disconnect is not required, but avoid shorting tools near the alternator.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• 19mm socket
• 1/2" drive breaker bar
• 10mm socket
• Ratchet (3/8" drive)
• 6" extension (3/8" drive)
• Trim clip removal tool
• Flathead screwdriver
• 14mm socket
• Long-handled ratchet (1/2" drive)
• Work light
• Mechanic gloves
• Safety glasses

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Serpentine belt (accessory drive belt) - Qty: 1

---

📋 Before You Begin

• 🧰 Park on level ground, shift to Park, and set the parking brake.
• 🧰 Chock the rear wheels using wheel chocks.
• 🧰 Take a photo of the belt routing diagram under the hood (or draw it).
• 🧰 If the routing sticker is missing, sketch the path before removing the belt.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift the right-front corner safely

• Use a 19mm socket and breaker bar to slightly loosen the right-front wheel lug nuts (about 1/2 turn).
• Use a floor jack (rated 3-ton minimum) to lift at the proper front jacking point.
• Place jack stands (rated 3-ton minimum) under a solid support point and lower the vehicle onto the stands.
• Remove the lug nuts with a 19mm socket and remove the wheel.

Step 2: Remove the right-front splash shield (inner fender)

• Use a trim clip removal tool and flathead screwdriver to remove the plastic push-clips.
• Use a 10mm socket, ratchet (3/8" drive), and 6" extension (3/8" drive) to remove any small bolts.
• Pull the splash shield back to expose the belt and pulleys.
• Tip: Keep clips in a cup.

Step 3: Locate the belt tensioner

• Find the automatic belt tensioner near the belt path.
• The tensioner is spring-loaded and keeps the belt tight automatically.
• Position your work light so you can clearly see the tensioner and belt.

Step 4: Release belt tension

• Put a 14mm socket on the tensioner’s hex/bolt head.
• Use a long-handled ratchet (1/2" drive) to rotate the tensioner and relieve belt tension.
• While holding the tensioner rotated, slide the belt off one easy-to-reach pulley (usually an idler pulley).
• Slowly return the tensioner back to its resting position.
• Tip: Move slowly; the spring is strong.

Step 5: Remove the old belt and inspect pulleys

• Remove the belt completely by hand from all pulleys.
• Spin each pulley by hand and feel/listen for roughness or wobble.
• If a pulley feels gritty, rocks side-to-side, or squeals, it may need replacement.

Step 6: Route the new belt

• Route the new belt around the pulleys following the under-hood routing diagram (or your photo).
• Make sure the belt ribs sit fully in the ribbed pulleys’ grooves.
• Leave one smooth pulley for last to make installation easier.
• Tip: One rib off will cause squeal.

Step 7: Apply tension and seat the belt

• Use the 14mm socket and long-handled ratchet (1/2" drive) to rotate the tensioner again.
• Slip the belt onto the last pulley while holding tensioner rotated.
• Slowly release the tensioner so it tightens the belt.
• Visually check every pulley to confirm the belt is centered and fully seated.

Step 8: Reinstall splash shield and wheel

• Reposition the splash shield and reinstall bolts using a 10mm socket and ratchet (3/8" drive).
• Reinstall the push-clips using a trim clip removal tool and flathead screwdriver.
• Reinstall the wheel and hand-thread the lug nuts.
• Lower the vehicle off the jack stands using the floor jack (rated 3-ton minimum).
• Tighten lug nuts in a star pattern using a 19mm socket and breaker bar to Torque to 127 Nm (94 ft-lbs).

---

✅ After Repair

• ✅ Start the engine and let it idle while you watch the belt for 30–60 seconds.
• ✅ Listen for squeal, chirping, or slapping sounds.
• ✅ Turn A/C on and off and confirm the belt tracks smoothly (no walking off a pulley).
• ✅ Shut the engine off and do one more visual check that the belt ribs are still aligned.

---

💰 DIY vs Shop Cost

Shop Cost: $180-$350 (parts + labor)

DIY Cost: $35-$80 (parts only)

You Save: $145-$270 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-1.5 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.