How do you change the fuel pump on a 2004 Sunfire?

Answer 1

Caution:On models with a Delco Loc 2 or Theftlock audio system be sure the lockout feature is turned off before proceeding * Disconnect the negative battery cable * Drain the cooling system * Remove the cooling fan then remove the serpentine drivebelt 2.2L OHV Engine * Remove the water pump pulley from the front of the water pump * Remove the coolant reservoir hoses * Detach the water pump retaining bolts and remove the pump from the vehicle 2.3L And 2.4L OHC Engines * Disconnect the oxygen sensor harness connector * Raise the vehicle and support it securely on jackstands * Remove the exhaust manifold brace and loosen the exhaust manifold bolts * Remove the radiator outlet pipe assembly to the water pump housing bolts and separate the assembly from the engine * Remove the exhaust manifold pipe from the exhaust manifold * Remove the radiator outlet pipe from the oil pan.On manual transaxles cars remove the exhaust manifold brace and keep the radiator inlet hose attached to the assembly.Pull down on the radiator outlet pipe in order to disengage the pipe from the water pump while leaving the radiator outlet pipe hanging * Lower the car remove the brake booster vacuum hose from the camshaft housing also remove the exhaust manifold from the cylinder head * Remove the timing chain cover from the engine * Remove the timing chain tensioner * Remove the water pump cover bolts from the engine block and the timing chain housing * Remove the water pump bolts and separate the assembly from the housing

Answer 2

Caution:On models with a Delco Loc 2 or Theftlock audio system be sure the lockout feature is turned off before proceeding * Disconnect the negative battery cable * Drain the cooling system * Remove the cooling fan then remove the serpentine drivebelt 2.2L OHV Engine * Remove the water pump pulley from the front of the water pump * Remove the coolant reservoir hoses * Detach the water pump retaining bolts and remove the pump from the vehicle 2.3L And 2.4L OHC Engines * Disconnect the oxygen sensor harness connector * Raise the vehicle and support it securely on jackstands * Remove the exhaust manifold brace and loosen the exhaust manifold bolts * Remove the radiator outlet pipe assembly to the water pump housing bolts and separate the assembly from the engine * Remove the exhaust manifold pipe from the exhaust manifold * Remove the radiator outlet pipe from the oil pan.On manual transaxles cars remove the exhaust manifold brace and keep the radiator inlet hose attached to the assembly.Pull down on the radiator outlet pipe in order to disengage the pipe from the water pump while leaving the radiator outlet pipe hanging * Lower the car remove the brake booster vacuum hose from the camshaft housing also remove the exhaust manifold from the cylinder head * Remove the timing chain cover from the engine * Remove the timing chain tensioner * Remove the water pump cover bolts from the engine block and the timing chain housing * Remove the water pump bolts and separate the assembly from the housing

Answer 3

very simple yet time consuming. First, disconnect the negative battery cable from the battery, then take a jack and place it halfway down the passenger side of the car and jack it up. Next, you need to take the exhaust off of the rubber hanger and let it sit on the frame. After that remove the heat shield by prying the off the rivets that hold it to the frame with a flat-head screwdriver. Nexy, take a floor jack and place it underneath the gas tank and raise it up far enough to make contact with the gas tank. Unscrew the metal straps that hold the gas tank in place and use the jack to slowly lower the gas tank to the ground. When that is done disconnect the quick connect fuel lines with a flat-head screwdriver, then disconnect the evap(large round tube). Unhook the wiring harness from the top of the fuel tank (this is the actual fuel pump). Take a pair of water-pump pliers to unscrew the lock counter-clockwise. Take out fuel pump and replace the o-ring with new one that is provided with your new fuel pump. The fuel pump is spring loaded so you have to push down on it to get the ring-lock on it. This is easier with two people. Reverse this process to complete the install. You may not be able to put the heat shield back on but is not necessary.