Question about 2000 Chevrolet Malibu

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Will a bad water pump cause blow back in the

Will a bad water pump cause blow back in the radiatior in a 2000 Chevy Malibu

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Well, a faulty water pump could cause the engine to overheat fairly quickly, but additional pressure in the cooling system is usually caused by a leaking head gasket.

Posted on Sep 19, 2014

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Posted on Jan 02, 2017

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Anonymous

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SOURCE: how to replace fuel pump on chevy malibu 2000

First you should check your trunk. some newer chevy's have an access pannel uner the trunk liner inside the trunk. you remove the liner, remove the bolts and panel, and the pump is right there. it may take some effort to get it wiggled through, but trust me, it will fit. you must remove the fuel lines and wire harness first, then remove the lock ring completely before attempting to pull the pump through the access hole. if that fails then you need to drop you fuel tank to access the pump. there are instructions for removal and installation of the tank below.

REMOVAL & INSTALLATION

  1. Disconnect the negative battery cable.
  2. Drain the fuel tank, using a hand-operated pump device to drain as much fuel through the filler tube as possible.



0900c1528026905d.jpg Fig. View of fuel tank mounting


0900c1528026905e.jpg Fig. The fuel filler pipe is attached to the body with a bracket and retaining bolt


0900c1528026905f.jpg Fig. The fuel filler pipe is attach to the tank by a hose clamp
  1. Raise and safely support the vehicle.
  2. Unfasten the muffler hanger bolts.
  3. Remove the rubber exhaust hangers, then allow the exhaust system to rest on the rear axle.
  4. Disconnect the hoses from the fuel tank sender. Grasp the filter and one nylon fuel connection line fitting. Twist the quick-connect fitting 1 / 4 turn in each direction to loosen any dirt within the fitting. Repeat for the other fitting. Using compressed air, blow out the dirt from the quick-connect fittings at the end of the fuel filter.
  5. Detach the quick-connect fittings by pulling the release tabs back on the fuel line quick connector and pulling apart.
  6. Disconnect the hoses at the tank from the filler, vent and vapor pipes.
  7. With the help of an assistant, support the fuel tank, then disconnect the two tank retaining straps and carefully lower the tank.
  8. Detach the fuel sender electrical connector.
  9. Unplug the fuel pressure sensor connector.
  10. Remove the fuel tank from the vehicle.

To install:
  1. If the tank is being replaced, perform the following:
    1. Remove the sound insulators.
    2. Remove the modular fuel pump/sender assembly, as outlined earlier in this section.
    3. Inspect all connectors for dirt and burrs. Clean or replace, as required. Inspect the fuel line O-rings for cuts, nicks, swelling and/or distortion and replace as necessary.
    4. Install the fuel sender assembly to the new tank, as outlined earlier in this section.
    5. Install the sound insulators.

  2. With the help of an assistant, raise the fuel tank to the vehicle and attach the fuel sender connector and, if equipped, the fuel pressure sensor connector.
  3. Raise the fuel tank into position then fasten the retaining straps. Tighten the retaining bolts to 26 ft. lbs. (35 Nm).
  4. Connect the hoses to the filler, vent and vapor pipes.
  5. Attach the nylon fuel feed and return connecting line quick-connect fittings to the fuel sender, as follows:
    1. Apply a few drops of clean engine oil to the male connector tube ends.
    2. Push the connectors together to cause the retaining tabs/fingers to snap into place.
    3. Once installed, pull on both ends of each connection to be sure they are secure.

  6. Install the rubber exhaust hangers.
  7. Install the muffler hanger bolts, then tighten to 11 ft. lbs. (15 Nm).
  8. Attach the fuel tank sender electrical connector.
  9. Carefully lower the vehicle.
  10. Refill the fuel tank, then connect the negative battery cable.
  11. Turn the ignition to the ON position for two seconds, then turn it to the OFF position for ten seconds. Turn again to the ON position and check for fuel leaks.

Posted on Nov 04, 2009

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1 Answer

Will a bad water pump in a 2000 Malibu cause blow


probably not . I would have a compression test done to check for head gasket or cracked head. Check coolant level in the radiator at the cap and ensure that there is no air lock in the cooling system as what you refer to is in fact boiling off from the cylinders not being completely surrounded by water or the compression gasses are escaping from the chamber

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Have the DIS module checked and the coil pack for cyl 3. If either/both of those need replaced, have it done and have the codes cleared. Then see if it clears the others.

You may need a TPS (throttle position sensor) as well.


Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

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