🔧 Water Pump - Replacement

Your F-150 uses a 3.5L EcoBoost water pump that is driven from the timing area, so this is a major repair. Coolant loss, leaks at the pump weep hole, or coolant in the oil all point to a failing pump and this job is typically much more involved than a standard external pump.

Difficulty Level: Advanced | Estimated Time: 8-12 hours

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⚠️ Safety & Precautions

• Let the engine cool completely before opening the cooling system.
• Coolant is toxic. Keep it off skin, paint, and drive surfaces.
• This repair involves the timing cover area. Keep dirt and debris out of the engine.
• Disconnect the negative battery cable before starting.
• Support the engine if you remove any mounts or brackets that carry engine weight.
• If coolant has mixed with engine oil, do not run the engine until oil and filter are changed.

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🔧 Required Tools

You'll need the following tools for this repair:

• 8mm socket
• 10mm socket
• 13mm socket
• 15mm socket
• 18mm socket
• 1/4-inch ratchet
• 3/8-inch ratchet
• 1/2-inch breaker bar
• Torque wrench
• Serpentine belt tool (specialty)
• Coolant drain pan
• Floor jack (rated 3-ton minimum)
• Jack stands
• Wheel chocks
• Drain pan
• Scraper
• Plastic trim tool
• Pliers
• Pick tool
• Clean rags
• Safety glasses
• Nitrile gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Water pump - Qty: 1
• Water pump gasket/seal - Qty: 1
• Engine coolant - Qty: 2-3 gallons
• Thermostat housing gasket - Qty: 1
• Accessory drive belt - Qty: 1
• Fresh engine oil - Qty: 1 change if coolant contamination is found
• Oil filter - Qty: 1 if coolant contamination is found

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Let the engine cool fully.
• Disconnect the negative battery cable.
• Raise the front of the truck and support it with jack stands if you need lower access.
• Drain the cooling system into a clean pan if you want to inspect coolant condition.
• Keep bolt lengths organized.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Drain the coolant

• Use a coolant drain pan to catch the coolant.
• Open the radiator drain if equipped, or remove the lower radiator hose carefully.
• Drain enough coolant to get the system below the water pump level.

Step 2: Remove intake and front accessories

• Use 8mm socket and 10mm socket to remove the air intake parts blocking access.
• Use a Serpentine belt tool (specialty) to release tension and remove the drive belt.
• Remove any brackets, covers, or splash shields blocking the front of the engine with the correct sockets.

Step 3: Remove the front engine components for access

• Use 10mm socket, 13mm socket, and 15mm socket to remove accessory brackets and related fasteners.
• If needed for access, remove the fan shroud and fan assembly with the proper sockets and a 1/2-inch breaker bar.
• Keep all fasteners in order by location.

Step 4: Remove the water pump drive area components

• Use 10mm socket and 13mm socket to remove the timing cover access pieces and pump-related brackets.
• Carefully remove any hoses attached to the pump or nearby housing with pliers.
• Do not pry on sealing surfaces.

Step 5: Remove the water pump

• Use 10mm socket to remove the water pump bolts.
• Pull the pump straight out once the bolts are removed.
• Inspect the old pump for shaft play, seal failure, and coolant tracking.

Step 6: Clean the mating surface

• Use a scraper and clean rags to clean the engine sealing surface.
• Do not gouge the aluminum surface.
• Wipe the area clean and dry.

Step 7: Install the new water pump

• Install the new water pump gasket/seal on the pump.
• Set the new pump in place by hand.
• Use 10mm socket to install the bolts finger tight first.
• Tighten the water pump bolts evenly in a crisscross pattern. Torque to 10 Nm (89 ft-lbs) if using inch-pounds? Verify final torque at service spec for your exact pump bolt set before final tightening.

Step 8: Reassemble the front of the engine

• Reinstall removed brackets, covers, hoses, and the fan assembly using the same sockets.
• Install the accessory drive belt with the Serpentine belt tool (specialty).
• Reinstall intake parts and splash shields.

Step 9: Refill and bleed the cooling system

• Refill with the correct engine coolant.
• Use the degas bottle and fill slowly to reduce air pockets.
• Start the engine and let it reach operating temperature with the heater on hot.
• Top off coolant as the level drops.

Step 10: Check for leaks

• Inspect the pump area, hoses, and drain points while the engine is running.
• Shut the engine off and recheck the coolant level after it cools.
• If coolant entered the oil, perform an immediate oil and filter change.

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✅ After Repair

• Test drive and watch the temperature gauge.
• Recheck coolant level after one full heat cycle.
• Inspect the oil for a milky color over the next few drives.
• Listen for belt noise or coolant seepage from the front cover area.

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💰 DIY vs Shop Cost

Shop Cost: $1,400-$2,400 (parts + labor)

DIY Cost: $180-$450 (parts only)

You Save: $950-$1,950 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 8-12 hours.

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🎯 Ready to get started?

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