Question about 1998 Buick LeSabre

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My engine accessory belt came loose on a 98 buick lesabre with a 3800 engine. Can I loosen Alternator so it can slip back on?

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There should be a TENSION PULLEY/ARM that accepts a large (3/4"?) wrench or cresent wrench. You rotate the pulley in the direction to loosen (its' tension) and get the belt back in place.
Sometime if the belt has ridden off the pulleys it will need to be replaced. Turn it so the "teeth" are on the outside and see if there are cracks in the rubber. Also look for wear marks on the pulleys or "rubber" that has come off the belt.

Posted on Oct 24, 2010

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Need to know where altnator location on 1998 serious 2 buick 3800 engine


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Aug 22, 2012 | 1998 Buick LeSabre

1 Answer

How does a serpenteen belt come loose on a 95 buick le lesabre?


Hi,
There's a tensioner pulley at the front/middle of the engine. It's the little wheel between the power steering pump and the alternator - the belt runs on the underside of it. You have to get a wrench or ratchet on the center nut of this pulley, and rotate it counterclockwise until you can slip the belt off. It is a lot of force, so having a helper could be good if you need both arms.

There should be a label showing the belt routing somewhere under the hood. If not, it helps to take a photo of the belt routing beforehand,

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1 Answer

Where is the power steering pump on a 1997 buick leSabre 3800


ou are looking at the engine, on the left (passenger side) will be the belt. The alternator should be at the top of the belts route. directly below the alt is the tensioner/pulley (small) Below and to the rear of the vehicle is the power steering pump. The resevoir is attached to the pump. If you reach/look over the engine and feel below the heater hoses you will see the p/s pump resevoir cap

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1 Answer

Would like to know the easiest way to replace a serpentine belt on a '98 Buick LeSabre with a 3800 series engine.


could send you diagram on how to with image how belt goes on, need an email address to send to

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Need to get alternator off of a 1997 buick lesabre how do I loosen the belt?


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Jun 15, 2009 | 1997 Buick LeSabre

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1983 GMC G2500 Alternator Belt Diagram


REMOVAL & INSTALLATION Fig. 1: A gauge is recommended, but you can check belt tension with thumb pressure 89771g18.gif
Fig. 2: Loosen the component's mounting and adjusting bolts slightly to remove or adjust the belt(s) 89771g19.gif
Fig. 3: Push the component toward the engine and slip off the belt 89771g21.gif
Fig. 4: Slip the new belt over the pulley 89771g22.gif
Fig. 5: Pull outward on the component and tighten the mounting bolts 89771g23.gif
Fig. 6: Accessory mountings found on 6.2L diesel engines 89771g24.gif
  1. Loosen the driven accessory's pivot and mounting bolts.
  2. Move the accessory toward or away from the engine until the tension is correct. You can use a wooden hammer handle, or broomstick, as a lever, but do not use anything metallic, such as a prybar.
  3. Tighten the bolts and recheck the tension. If new belts have been installed, run the engine for a few minutes, then recheck and readjust as necessary. It is better to have belts too loose than too tight, because overtight belts will lead to bearing failure, particularly in the water pump and alternator. However, loose belts place an extremely high impact load on the driven component due to the whipping action of the belt.

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take belt off then make sure you have the right size socket and breaker bar to loosen the bolts on the tensioner and do everything in reverse to put new on

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