🔧 Water Pump - Replacement

Your Sequoia’s water pump is belt-driven and sealed to the front of the engine. Replacing it usually means draining the coolant, removing the serpentine belt, pulling the pump, cleaning the mating surface, and installing the new pump with fresh gaskets and coolant.

Difficulty Level: Intermediate | Estimated Time: 3-5 hours

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⚠️ Safety & Precautions

• Work only on a completely cool engine. Hot coolant can cause serious burns.
• Raise the front of the vehicle securely on jack stands before working underneath.
• Disconnect the negative battery cable if you want extra safety around the fan and accessory drive.
• Keep coolant away from pets and clean spills immediately.
• Do not reuse a damaged water pump gasket or sealant surface.

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🔧 Required Tools

You'll need the following tools for this repair:

• 3/8-inch drive ratchet
• 10mm socket
• 12mm socket
• 14mm socket
• 17mm socket
• 1/2-inch breaker bar
• Serpentine belt tool (specialty)
• Drain pan
• Floor jack (rated 3-ton minimum)
• Jack stands (rated for vehicle weight)
• Funnel
• Plastic scraper
• Torque wrench
• Coolant refill funnel (spill-free type)
• Safety glasses
• Mechanic gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Water pump assembly - Qty: 1
• Water pump gasket - Qty: 1
• Engine coolant - Qty: 2-3 gallons
• Thermostat gasket - Qty: 1
• Serpentine belt - Qty: 1
• Water pump O-rings or seals - Qty: 1 set
• Coolant drain plug washer - Qty: 1

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Let the engine cool fully before opening the cooling system.
• Raise the front of the Sequoia and support it securely on jack stands.
• Disconnect the negative battery cable if you want the safest work area.
• Have a spill-free funnel ready for refilling and bleeding the cooling system.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Drain the coolant

• Use a drain pan under the radiator drain area.
• Open the radiator drain cock and remove the reservoir cap to help flow.
• Drain enough coolant so the level sits below the water pump.
• Keep the coolant for proper recycling.

Step 2: Remove the engine cover and intake ducting

• Use a 10mm socket to remove the engine cover fasteners if equipped.
• Remove the air intake duct as needed for access to the belt area.
• Set parts aside in order so reassembly is simple.

Step 3: Remove the serpentine belt

• Use a serpentine belt tool or 1/2-inch breaker bar on the belt tensioner.
• Relieve tension and slip the belt off the pulleys.
• Inspect the belt now. Replace it if cracked, glazed, or noisy.

Step 4: Remove any components blocking access

• Use a 10mm and 12mm socket to remove splash shields or brackets in the way.
• If equipped with fan shroud clearance issues, remove the upper shroud fasteners as needed.
• Keep track of bolt locations and lengths.

Step 5: Remove the water pump

• Use a 12mm socket to remove the water pump bolts in a crisscross pattern.
• Break the pump loose carefully and catch any remaining coolant.
• Remove the pump from the engine.
• Do not pry hard on the aluminum housing.

Step 6: Clean the mating surface

• Use a plastic scraper to clean the engine sealing surface.
• Remove all old gasket material and corrosion without scratching the metal.
• Wipe the area clean and dry before installing the new pump.

Step 7: Install the new water pump

• Install the new gasket on the pump or engine, depending on design.
• Place the new water pump in position and start all bolts by hand.
• Use a 12mm socket and torque wrench to tighten the bolts evenly.
• Torque to 18 Nm (13 ft-lbs).

Step 8: Reinstall removed components and the belt

• Reinstall any brackets, shields, or shrouds using the correct socket size.
• Route the serpentine belt according to the belt diagram.
• Use the belt tool to release the tensioner and fully seat the belt.

Step 9: Refill the cooling system

• Use a funnel or spill-free funnel to fill with the correct Toyota-spec coolant.
• Fill the radiator and reservoir to the proper levels.
• Leave the cap off for the initial air purge if needed.
• Use only the correct long-life coolant type.

Step 10: Bleed air from the system

• Start the engine and let it idle with the heater set to hot.
• Watch the coolant level and top off as air escapes.
• Check for bubbles, leaks, and proper heater output.
• Install the radiator cap once the level stabilizes and the thermostat opens.

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✅ After Repair

• Check all hose connections and the pump seam for leaks.
• Verify the engine reaches normal temperature and the heater blows hot air.
• Recheck coolant level after a full heat cycle and again the next day.
• Test drive and watch the temperature gauge closely.

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💰 DIY vs Shop Cost

Shop Cost: $850-$1,450 (parts + labor)

DIY Cost: $180-$420 (parts only)

You Save: $670-$1,030 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 3-5 hours.

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🎯 Ready to get started?

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