Question about 2003 Oldsmobile Alero

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How to replace water pump 2003 alero. 3400 engine.

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  • Oldsmobile Master
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Removal & Installation 2.2L Engine To Remove:

  1. Disconnect the battery ground cable.
  2. If equipped with an automatic transmission, remove the exhaust manifold..
  3. Drain the cooling system.
  4. Raise and safely support the vehicle.
  5. Remove or disconnect the following:
    • Right front wheel and tire assembly.
    • Right front fender liner. how to replace water pump 2003 alero. 3400 engine. - chevy_cav_02-04_accescover.gif

    • Access plate on the water pump sprocket from the timing cover.
  6. Install J 43651 water pump sprocket holder or equivalent to the water pump sprocket.
  7. Use the access plate bolts to attach J43651 to the engine front cover.
  8. Remove or disconnect the following:
    • Bolts that secure the sprocket to the water pump.
    • Bolt that secures the engine block to the water pump.
    • Bolt that secures the engine front cover to the water pump.
    • Feed pipe that joins the thermostat housing to the water pump. chevy_cav_02-04_wp.gif

    • 2 Bolts that secure the water pump to the engine block.
    • Water pump.
To Install:
  1. Use a threaded stud in the hub to align the water pump sprocket.
  2. Install or connect the following:
    • Water pump.
    • 2 bolts that secure the water pump to the engine block.
    • Feed pipe that joins the thermostat housing to the water pump.
    • Front cover bolt and the bolt that secures the engine block to the water pump. Tighten the bolts to 15 ft lbs (20 Nm).
    • 2 of the bolts that secure the water pump sprocket to the water pump.
  3. Remove the threaded stud.
  4. Install the last bolt.
    • Tighten the bolts to 89 in lbs (10 Nm).
  5. Remove J 43651.
  6. Install the access plate on the water pump sprocket to the timing cover.
  7. Install the access plate bolts.
    • Tighten the bolts to 18 in lbs (10 Nm).
  8. Install the front fender liner.
  9. Install the right front tire and wheel.
  10. If equipped with an automatic transmission, install the exhaust manifold.
  11. Fill the cooling system.
  12. Connect the battery ground cable.
2.4L Engine To Remove:
Water pump 2.4L 87953070.gif

  1. Disconnect the negative battery cable
  2. Drain the engine coolant.
  3. Remove the exhaust manifold.
  4. Remove the coolant intake pipe as follows:
    1. Remove the coolant inlet pipe bolts.
    2. Remove the wheel and tire assembly.
    3. Remove the engine splash shield.
    4. Remove the bolts from the transaxle-to-engine block brace and remove the brace.
    5. Remove the radiator hose from the coolant inlet pipe.
    6. Remove the coolant inlet pipe to oil pan bolt.
    7. Remove the coolant inlet pipe, thermostat and seal.
  5. Lower the vehicle.
  6. Disconnect the heater hose quick connect from the heater outlet pipe.
  7. Remove the front timing chain cover and the chain tensioner.
  8. Unfasten the water pump-to-cylinder block bolts.
  9. Remove the water pump-to-timing chain housing nuts.
  10. Remove the water pump and cover mounting bolts and nuts.
  11. Remove the water pump and cover as an assembly. Separate the two pieces after removal.
  12. Clean the mating surfaces.
To Install:
  1. Install the water pump cover to the water pump assembly.
  2. Install and hand tighten the pump cover mounting bolts.
  3. Install water pump cover assembly.
  4. Install and hand tighten the cover-to-block mounting bolts.
  5. Install and hand tighten the water pump-to-timing chain housing nuts.
    • Tighten the water pump-to-timing chain housing mounting nuts to 19 ft lb (26 Nm).
    • Tighten the water pump cover-to-water pump mounting bolts to 124 in lb (14 Nm).
    • Tighten the water pump cover-to-engine block bolts starting with the bottom bolt first to 19 ft lb (26 Nm).
  6. Install the heater hose to the water pump pipe.
  7. Using new gaskets, install the exhaust manifold.
  8. Install the oil level indicator and tube.
  9. Connect the brake vacuum tube to the cam housing.
  10. Raise and safely support the vehicle.
  11. Install the catalytic converter.
  12. Install the coolant inlet pipe.
    • Tighten the inlet pipe-to-oil pan bolt to 19 ft lb (26 Nm). Tighten the coolant inlet pipe bolt to 124 in lb (14 Nm).
  13. Install the timing chain and tensioner.
  14. Lower the vehicle.
  15. Connect the oxygen sensor.
  16. Fill cooling system and check the system for leaks.
3.4L Engine To Remove:
  1. Disconnect the battery ground cable.
  2. Drain the cooling system.
  3. Loosen the water pump pulley bolts.
  4. Remove or disconnect the following:
    • Drive belt.
    • Water pump pulley bolts and pulley.
    • Water pump bolts, pump and gasket.
    • Clean the water pump mating surfaces.
To Install:
  1. Install or connect the following:
    • Water pump gasket and pump.
    • Water pump bolts.
      1. Tighten the water pump bolts to 89 in lbs (10 Nm).
    • Water pump pulley and bolt until snug.
    • Drive belt.
  2. Tighten the water pump pulley bolts to 18 ft. lbs (25 Nm).
  3. Fill the cooling system.
  4. Check for leaks.
  5. Connect the battery ground cable.
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Posted on Aug 31, 2010

Testimonial: "great help. this job took me 2 hours in my garage at home and saved me over $500.00. My olds has 135000 miles on original w/p. thanks lots"

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