How can I interchange 3800 engine 1992 buick lesabre with 1994 buick lesabre 3800 engine

SOURCE: Serpentine Belt Tensioner

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

SOURCE: doing a tune up on a 1994 buick lesabre

A full tune up consists of spark plugs, distributer cap. wires. rotor for under the cap, air filter and if you want you should change the fuel and oil filter. I hope this helps.

SOURCE: 1992 buick lesabre horn wont work are there fuses and where

on a removable panel under the steeering column marked fuse panel and some times the are located in the glovebox

SOURCE: trying to locate oil filter on 2003 Buick Lesabre Custom 3800 eng

3.8 is under the belly pan nearest the front of the engine...why don't you just have it changed by nice mechanic and if your nice, maybe he'll let you watch!
Good Luck

SOURCE: belt routing diagram 1998 Buick Lesabre 3800

Hi, you can get the belt routing diagram for your Buick Lesabre 3800 engine HERE