Question about 2000 Chevrolet Impala

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Why is my serpentine belt not lining up?

The alternator and belt tensioner have both been replaced and the belt is off about 1/4 inch.

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I think that you've either had the wrong replacement parts installed, the wrong belt or could be missing a spacer somewhere causing your belts not to align. Also you could have another pulley or pump needing replacement or just simply the replacements were not installed correctly along with their bracketts. There is a more serious outcome if everything has been done correctly but lets not go there yet.

Posted on May 07, 2010

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How to replace altenator on 97 olds achieva


  1. Disconnect the negative battery cable.
  2. Label and disengage the electrical connections from the alternator.
  3. On the 2.5L engines, loosen the adjusting bolts and remove the alternator belt.
  4. If equipped with a serpentine belt, loosen the tensioner and turn it counterclockwise to remove the belt.
  5. Unfasten the alternator mounting bolts, then detach the alternator air inlet connector (3.1L engine only) and remove the alternator from the engine.
To install:
  1. Fasten the alternator to the mounting bracket, using the retaining bolts, washers and nuts. Tighten the retainers to the specifications listed in the accompanying figures.
  1. If equipped with the 3.1L engine, attach the alternator air inlet connector.
  2. Install the serpentine or alternator belt, as applicable. For details, please refer to Section 1 of this manual.
  3. Engage the alternator electrical connections. Tighten the "Bat" terminal nut to 65 inch lbs. (7 Nm).
  4. Check the belt tension, then adjust if necessary.
  5. Connect the negative battery cable, then check the alternator for proper operation.

Jul 22, 2013 | Cars & Trucks

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I am trying to hange the serpentine belt on my 09 lancer rallyart and it keeps slipping off


Locate the two belts on the left side (passenger side) of your Mitsubishi Lancer. The outer belt is a serpentine belt, operating four pulleys and the inner belt is your alternator belt.

  • 2 Follow the serpentine (outer) belt to the three pulleys lined up vertically near the front of the engine compartment. Locate the middle pulley, which is the tension pulley for the belt.
  • 3 Loosen the bolt on the middle pulley with a socket wrench by turning counter-clockwise. Do not remove the bolt, just turn it a couple of times. Loosen the tensioner bolt on the side of the of the pulley, facing the front of the vehicle.
  • 4 Remove the serpentine belt and then loosen the bolt on the alternator. With the alternator loose, move it forward so that the alternator belt loosens up and then remove belt from the pulleys.
  • 5 Install the new alternator belt by placing it over both inside pulleys. Tighten the tension on the alternator belt by moving the alternator back and keeping tension on it by holding it back with a long screwdriver. While the alternator belt is tight, use a socket wrench to tighten up the bolt on the alternator.
  • 6 Place the serpentine belt back on the pulleys and then use a socket wrench on the bolt on the front of the tension pulley. Once the serpentine belt is tight, tighten up the bolt in the middle of the tension pulley.
  • 7 Start the Mitsubishi Lancer's engine to test the alternator belt and make sure it is working properly. Once you have verified it is working, turn the engine off.
  • Oct 25, 2011 | 2008 Mitsubishi Lancer GTS CVT Sedan

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    I need to replace the serpentine belt but i do not know where the tensioner is or how to loosen it


    Hi, use a 3/8 inch flex handle or ratchet inserted into the square hole on the extended part of the tensioner as shown in the picture below and rotate counterclockwise to relive tension on the belt. Let me know if you have more questions and thanks for using FixYa.

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    Dec 26, 2010 | 1990 Cadillac SeVille

    1 Answer

    Need to change the alternator on a 2001 sunfire,2.4 engine,how do i do that?


    Things You'll Need:
    • Battery terminal wrench
    • Serpentine belt removal tool
    • 3/8-inch ratchet
    • 3/8-inch metric socket set
    1. Turn off the engine and place the transmission in park (automatic) or first gear (manual). Engage the parking brake and open the hood. Disconnect the negative cable from the battery terminal using the battery terminal wrench.

    2. Remove the serpentine belt by inserting the end of the serpentine belt tool into the square hole on the belt tensioner and rotating the removal tool clockwise. Unplug the alternator's electrical connector. Remove the bolt holding the positive voltage cable to the alternator using a 3/8-inch ratchet and a metric socket. Remove the positive voltage cable from the alternator.

    3. Remove the alternator bracket bolts using a metric socket connected to a 3/8-inch ratchet. Remove the alternator from the car. Place the new alternator in the mounting brackets and reinstall the mounting bolts using a 3/8-inch ratchet connected to a metric socket.

    4. Reinstall the positive voltage cable on the alternator and tighten the retaining nut using a 3/8-inch ratchet and a metric socket. Plug in the alternator's electrical connector. Compress the serpentine belt tensioner using the serpentine belt tool. Reinstall the serpentine belt according to the belt-routing diagram located under the hood.

    5. Reconnect the negative cable to the battery using the battery terminal wrench. Start the engine and verify that the alternator works.

    Oct 29, 2010 | 2001 Pontiac Sunfire

    1 Answer

    Replace alternator belt


  • Locate the two belts on the left side (passenger side) of your Mitsubishi Lancer. The outer belt is a serpentine belt, operating four pulleys and the inner belt is your alternator belt.

  • 2

    Follow the serpentine (outer) belt to the three pulleys lined up vertically near the front of the engine compartment. Locate the middle pulley, which is the tension pulley for the belt.

  • 3

    Loosen the bolt on the middle pulley with a socket wrench by turning counter-clockwise. Do not remove the bolt, just turn it a couple of times. Loosen the tensioner bolt on the side of the of the pulley, facing the front of the vehicle.

  • 4

    Remove the serpentine belt and then loosen the bolt on the alternator. With the alternator loose, move it forward so that the alternator belt loosens up and then remove belt from the pulleys.

  • 5

    Install the new alternator belt by placing it over both inside pulleys. Tighten the tension on the alternator belt by moving the alternator back and keeping tension on it by holding it back with a long screwdriver. While the alternator belt is tight, use a socket wrench to tighten up the bolt on the alternator.

  • 6

    Place the serpentine belt back on the pulleys and then use a socket wrench on the bolt on the front of the tension pulley. Once the serpentine belt is tight, tighten up the bolt in the middle of the tension pulley.

  • 7

    Start the Mitsubishi Lancer's engine to test the alternator belt and make sure it is working properly. Once you have verified it is working, turn the engine off.

  • Oct 08, 2010 | 2002 Mitsubishi Lancer

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    Change serpentine belt on 06 sienna


    1. 1 Check to ensure the Sienna's engine is cold, then make sure the Sienna is in park, the ignition is in the off position and the key is removed from the ignition to prevent any possibility of the engine engaging during the serpentine belt replacement.
    2. 2 Open the hood and locate the serpentine belt routing diagram sticker on the side of the engine casing. Study it for a moment before removing the existing belt. It is essential the new belt be installed exactly as the diagram indicates.
    3. 3 Find the tensioner pulley, the main pulley that controls the serpentine belt, and fit a 1/2-inch socket wrench over the self-tensioner on the outside of the pulley.
    4. 4 Pull the wrench to the left to move the pulley forward, which loosens the belt, then remove the belt.
    5. 5 Compare the old serpentine belt with the new, replacement belt for length, width and number of grooves on the belt's underside. Be certain the replacement belt is the right part.
    6. 6 Fit the new belt on to each pulley according to the serpentine belt routing diagram on the manufacturer's sticker, or according to the drawing made prior to removing the old belt. Fit the new belt on to the tensioner pulley last, again applying pressure on the pulley's self-tensioner with the half-inch socket wrench to loosen the pulley.
    7. 7 Release the pressure on the self tensioner and allow the tensioner pulley to ease back into place, thereby tightening the new serpentine belt with the appropriate tension.
    8. 8 Remove the wrench and close the hood.
    Thank you and good luck,
    Lee

    Aug 26, 2010 | 2006 Toyota Sienna

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    I need to replace a serpentine belt on a 1984 Ford Bronco. Can anyone tell me where to find the belt tensioner? Also can the belt be replaced without removing the radiator fan? Thanks.


    No - your belt cannot be replaced without taking the fan off. More than likely, you also have multiple belts. You will have a 1/2 inch spot on most of the plates to tighten each individual component. Look for a place to attach a 1/2 inch breaker bar/ratchet next to the alternator, steering pump, smug pump, etc. These should all be v-belts on a 1984, not a true serpentine.

    May 08, 2010 | 1984 Ford Bronco

    1 Answer

    Replacing a serpentine belt


    Don't have a chart, video, or diagram available at the moment. Can offer you generic advice.

    1.Somewhere in the middle of that serpentine belt, that is wrapped around all those pulleys, is an Idler tensioner Pulley. All this pulley does, is put tension on that serpentine belt. Usually located somewhere in the middle.

    The Idler tensioner Pulley will be on a bracket. It will be on the end of the bracket. The bracket usually has a 1/2 inch square hole in it. This is used for a tool, that resembles a 1/2 inch breaker bar.
    -> I, use a 1/2 inch breaker bar.
    The 1/2 inch breaker bar is inserted into this square hole, and the bracket is pulled to one side.
    This pulls the tensioner pulley away from the serpentine belt, allowing the belt to have slack, and then the belt is slipped off of one of those pulleys. Release the pressure slowly, remove the tool. Then the serpentine belt is removed all the way.

    (The Idler tensioner pulley bracket, can only be moved in one direction, to take pressure off of the serpentine belt. The direction opposite, of it putting pressure on the serpentine belt.

    The spring used to put pressure is Very strong. This is also an area, where you can easily slip, cutting your knuckles, or fingers, or hand, on sharp objects. Use caution, you may want to wear a glove, or gloves!)

    Then the new serpentine belt is wound around the pulleys in the correct pattern, the Idler Tensioner Pulley is once again pulled to the side, and the last of the serpentine belt is slid into place. Then you slowly release the tensioner pulley, and it puts pressure on the serpentine belt once more.

    Make sure the serpentine belt is in the grooves of the pulleys, and is wound around in the correct pattern.

    On the car hood inside, or on the radiator support, or perhaps on the inner fender well, or in the Owners Manual, it should show the correct pattern for installing the serpentine belt.

    Apr 24, 2009 | 1998 Cadillac DeVille

    1 Answer

    What is the quickest and easist way to replace the alternator and put the serpintine belt back on?


    here is step by step instruction on how to replace you alternator. please do not forget to rate and comment abotu your experience with fixya today 3.8L (VIN 1) Supercharged Engines
    1. Disconnect the negative battery cable.
    2. Remove the serpentine drive belt from the alternator, as outlined in Section 1 of this manual.
    3. Detach the electrical connections from the alternator.
    4. Unfasten the alternator mounting bolt and mounting bolt and nut.
    5. Remove the alternator from the vehicle.
      To install:
      1. Position the alternator in the vehicle and secure with the mounting nut and bolt. Tighten to 5 ft. lbs. (8 Nm).
      2. Install the remaining mounting bolt and tighten to 5 ft. lbs. (8 Nm).
      3. Attach the alternator connections. Tighten the output terminal nut to 66 inch lbs. (7.5 Nm).
      4. Install the serpentine drive belt.
      5. Connect the negative battery cable.
    3.8L (VIN 3, C & L) Engines
    1. Disconnect the negative battery cable.
    2. Using a suitable breaker bar or ratchet, rotate the tensioner counterclockwise, then remove the serpentine drive belt. For more information regarding serpentine drive belt removal, please refer to Section 1 of this manual.
    3. If necessary, remove the fuel rail cover.
    4. While supporting the alternator, remove the mounting bolts.
    5. Tilt the alternator forward, then label and detach the electrical connectors.
    6. Remove the alternator from the vehicle.
    7. To install:
      1. Support the alternator in position, then install the alternator.
      2. Install the mounting bolts and tighten to 1 ft. lbs. (11 Nm).
      3. Attach the electrical connectors at the back of the alternator. Tighten the alternator output terminal nut to 93 inch lbs. (10.5 Nm) for 1987-92 vehicles, or to 66 inch lbs. (7.5 Nm) for 1993-94 vehicles.
      4. If removed, install the fuel rail cover.
      5. Install the serpentine drive belt and rotate the tensioner into position.
      6. Connect the negative battery cable.

    Apr 16, 2009 | 1992 Buick LeSabre

    3 Answers

    How do you loosen the serpentine belt


    That wasn't right though. There is a 1/2 slot for a 1/2 inch breaker bar and when two holes are lined up you stick a drill bit or similar peice through to lock it in place till you get the belt routed then pull back alittle bit on the breaker bar to remove tension from the drill bit . Remove the drill bit and release tension on breaker bar and remove it to put tension on the belt.Then check alignment , positioning, routing of the belt visually.

    Jan 22, 2009 | 1996 Saab 900

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