Car And Truck Brake Parts

Buick Lesabre

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Buick Lesabre
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This relates to a 2002 Buick LeSabre with a 3.8L engine, but the same general principles would apply to most any car with the same problem, I'd guess.

Occasionally, the accelerator would briefly resist moving when pressed. Then, when sufficient pressure was applied, it would break loose and operate normally. This seemed to be happening more frequently and the pressure required to break it loose became greater.

Time to look at it!

Step one was to remove the plastic shroud which covers the engine. This can easily be done by unscrewing the oil fill spout (the 3-inch extension onto which the oil filler cap fits) by unscrewing it a half turn and lifting it out. This exposed the fuel injector body and mechanism.

By manually working the sector pulley which was activated by the accelerator, I concluded that the butterfly was sticking in the closed position. But how to get at it was the problem!

I removed the rubber boot between the air box and the fuel injector body. But this revealed a "screen" which totally covered the intake!

That "screen" was held in by a "C" ring which I removed next. But the "screen" didn't come out easily. It's not a flat screen; it's a honeycomb piece about 1/4 inch in thickness. It worked best to work it out a little all around the circumference and going around multiple times. I used a knife blade to pry it out, but next time I'd use a wire with a hook on the end to go in and pull it out from the inside.

I think its purpose is two-fold:
1. Create a laminar air flow into the chamber, and
2. Serve as a "heat absorber" or flame suppressor in event of a backfire.

Once that was removed, I could see the butterfly and could pretty much confirm that was where the problem was. I cleaned it up around the circumference, but it still stuck. Then I squirted some AMSOIL MP (sort of like WD-40) into the butterfly shaft bushings.

That did the trick! No more sticking!

How long it will stay that way remains to be seen!

If it fails again, I'll remove the throttle position sensor on the front of the injector body. That should expose one end of the butterfly shaft, and that was the end which gave the most trouble this time. (This requires a Torx wrench to remove.)

What was the cause? Truly, I don't know. It acted like there was "old grease" in there which gummed up, but doubt that it was lubricated with grease. Maybe "sticky stuff" in the gasoline over 60k miles?

Copyright 2007 by Keith A. Williams

The author is mechanically inclined and tries to keep his house, vehicles, and machines running by doing repair and preventative maintenance himself. For over 30 years, he's sold synthetic lubricants and other products as an Independent AMSOIL Dealer.

You can pick up a free AMSOIL catalog from his site at http://syntheticsaves.com

Buick's Fabulous Five

The Buick Motor Division of General Motors Corporation is in transition, like the rest of the venerable auto company. Older models have been canceled, adding new models and the current line up is radically different from just three years earlier. Now up to five models, the remaining vehicles in the Buick line-up are all winners. Let's take a look at each model and what they offer to consumers.

Lucerne – Buick Roadmaster and LeSabre are both gone, butfull-size Lucerne have taken their place. With V8 power and luxurious appointments such as heated and cooled seats, heated windshield fluid liquid, leather trim, Lucerne is the great based on the Cadillac DTS, but the car sold for more than U.S. $ 10,000 less than the market until Caddy cousin.

Lacrosse – This five seats sedan is sleek, aerodynamic and quiet. With prices starting in the Low 20 thousand-dollar range, the car competes against theToyota Camry and Honda Accord.

Rainier – The larger of two Buick SUVs, the Rainier comes standard with a 275hp I6, Stabitrak suspension / steering system, eight way driver powered seats, leather seats and much more.

Rendezvous – As the first SUV, Buick, the Rendezvous has succeeded where its Pontiac cousin, the Aztek has failed. Available in two or four wheel drive, the Rendezvous offers space for five [with the space available for seven], four-wheel disc brakes, and a variety ofsought outdoorsmen desired accessories.

Terraza – Is it a minivan or a SUV? The Terraza is part of a family of GM crossover vehicles introduced in the 2005 model year. These seven cars come equipped with a 3.5L engine and R6 is available in either front-wheel drive or all-wheel drive. As GM still holds its aging and unpopular line of minivans will be exempt, the Terraza and its cousins likely to step and fill the hole.

General Motors waspretty quiet about the future of Buick. Some were concerned by the constant degradation of the models, while others see Buick make a clean break from the past, has included several uninspiring models such as the Century and the Roadmaster.

In spite of everything was the Buick Enclave, featured in the recently ended Detroit Auto Show rave reviews. The Enclave is yet another crossover vehicle, and it should hit Buick showrooms by 2008.  read more http://www.dollarcar.equitylinesite.com/2009/10/16/buicks-fabulous-five/

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How to Prevent Buick LeSabre Plastic Manifold Problems?

I was thinking of buying a Buick LeSabre but have heard bad things about their intake manifolds, but I've also heard that they are an easy fix if you take care of it before it happens. Does anyone know of where to find the kits to take care of the problem? Any recommendations on how to take care of the manifold problem before it becomes a serious issue?

They can be a problem, If you are refering to the upper intake plenum, but i have never heard of anything you can do to prevent it.
Don't let that stop you. 3.8L is a very good engine.

April 29 On the Record
Accident caused by careless driving MEDFORD—On April 26 police in patrol vehicles located a motor vehicle accident between a Ford Explorer and Toyota Celica on Tuckerton Road at Jackson Road. Police said that the driver of the Ford Explorer, Barry Tarzy, 68, of Sunrise Trail, was slowing for stopped traffic when his vehicle was struck from behind by the Toyota Celica operated by Bethany Wiegard ...

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