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www.youtube.com/watch?v=kHpRUjTJRAc
Dec 16, 2009 - Uploaded by ranchero302me
HOW TO REPLACE IDLER ARM AN TENSIONER PULLEY ON A 1995 ... Serpentine belt replacement Buick Lesabre 1998 3.8L Oldsmobile, ...
loosen the big nut in the centre of the idler pulley . Behind the pulley there will be a long adjusting bolt adjust until the pulley is completely free. finish undoing the big nut and the pulley and spacer will slide off the shaft. Remember which way the spacer goes
First off............. It sounds horrible. The bearings are the primary failure point. The supercharger is actually not that prone to failure. I've had several SC 3800's with well over 150,000 miles without an issue. I've lost idler pulleys many times but an actual component failure like the SC./
if it is a 3.8 liter v-6, then you first have to remove the balancer pulley to access the crankshaft sensor that is bolted to the block behind the balancer pulley.
unplug the cam sensor behind the water pump pulley; see if it starts; if it does, shut off engine; replace both cam and crank sensors because crank sensors go out in these engines
1995 riviera is not turbocharged; it is supercharged--big diff; if the noise sounds like rocks tumbling, then you need to replace the plastic coupler in the supercharger; part is cheap -;labor is a lil high; it is a pain because you have to remove the alternator bracket on the buick version of the 3.8
On a 1995 Buick Riviera, the fuse box is located under the hood in the engine compartment, just behind the passenger side headlamp. A detail of the fuses in this fuse box can be found on the inside cover of the box when you open it. Hope this helps!
Once the belt is removed, the center bolt from the idler pulley should unscrew normally with a socket. The replacement pulley bolts back in with the same bolt, then just put the belt back on. The bolt should be very snug, but do not overtighten ir it will shorten the life of the idler. As tight as you can get it with one hand using a typical 3/8" ratchet should be adequate. There should be a belt routing diagram on a sticker under the hood. Belt removal and reinstallation is achieved by using a 3/8" drive ratchet or breaker bar to engage the square hole on the spring loaded tensioner arm and flex it clockwise on most engines. On other GM engines, placing a socket on the center bolt of the tensioner pulley and turning clockwise will flex the tensioner to loosen the belt. When you have the belt off, check all pulleys for smooth rotation and listen for squeaking. If any of them bind or squeak, they should be repaired/replaced as well. Installing a new belt is also a good idea when replacing the idler.
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