Question about 2000 Lexus LX470

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Hydraulic fluid in the struts where nitrogen gas is supposed to b

Car bounces like there are no shock absorbers in the front. Dealer said hydraulic oil in the automatic height adjustment system must have been contaminated. This resulted in the seals in the struts to fail whick resulted in hydraulic oil leaking into the struts. I bought the SUV two years ago and took it to the dealer for a 90,000 mile inspection. At that time the dealer flushed the hydraulic system and replaced the oil at about 95,000 miles. Vehicle now has 120,000 miles. Cost to repair is $3,200. This is about $2,200 for parts, $100 for hydraulic fluid and $900 labor. Can someone tell me if I am being told the truth or do these systems fail for some other reason. Also, is it realistic that two years after having the oil flushed that the seals fail due to contamination in the system prior to two years ago. Also would like to know if I have any alternatives.

Thanks,

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You are being told the truth about the repair and its costs...i can guarantee that

Posted on Jan 24, 2009

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How do I know if my front struts in a 2006 Pontiac Torrent need to be replaced


front struts is like normal shock absorber. push front car downward let it bounce it should be 1 or 2 bounces if not replace it . before visual inspection to see if oil coming out of strut.
hope it helps

Oct 17, 2014 | 2006 Pontiac Torrent

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When should I replace my shocks and or struts When a vehicle is brought into an...


When should I replace my shocks and or struts
When a vehicle is brought into an auto repair shop for routine vehicle maintenance, the auto technician may suggest that the vehicle shocks or struts need to be replaced. Learn the function of a car or trucks shocks and struts. Find out why the shocks and struts need to be replaced and how someone can tell if they’re bad.

The Purpose or Function of a Cars Shocks and Struts

Shocks and struts serve the same purpose. They’re main function is to keep the vehicle from bouncing. A vehicle has front and rear springs to cushion the vehicle over rough road conditions. If there were no shocks or struts the vehicle would continue to bounce excessively. The shocks and struts prevent the car from bouncing by damping the springs.

What’s the Difference Between Shocks and Struts?

Shocks are usually used to dampen leaf springs, where as a strut is used to dampen coil springs. Shocks are usually a single cylinder in the open where as a strut is normally surrounded by the coil spring and are more massive and complicated.

That’s why struts normally cost a lot more to replace than a shock. On a car the front suspension usually has struts and the rear usually has shocks. Some trucks have shocks on the front and rear. Other than those distinctions, shocks and struts serve exactly the same purpose.

Why Should the Cars Shocks or Struts be replaced?

Keeping in mind that the purpose of shocks and struts is to keep the vehicle from bouncing, the following is some of the reasons why they should be replaced.

* An excessively bouncing car can be an uncomfortable driving experience.
* The vehicle can be harder to control leading to an unsafe condition.
* Excessive strain can be put on other vehicle components causing premature failure.
* Bad shocks or struts will cause the tires to bounce and create spotty or choppy wear on the vehicles tires.

How to Tell if a Cars Shocks or Struts are Bad

1. Shocks and struts can be oil or air filled. If they are leaking oil or air they need to be replaced. Consumer beware, some dishonest auto repair shops will squirt oil on the shocks, show the customer the leaky shocks and tell them they need to be replaced.
2. Another method is the bounce test. Put all your weight on the front or rear of the vehicle and push down on the vehicle. Let go of the vehicle and stand back to see of it bounces. If the vehicle comes back up without bouncing, the shocks are probably in good shape. If the vehicle bounces a few times, chances are the shocks or struts need to be replaced.

Shocks and struts are wear items, not maintenance items. There’s no set mileage or time limit when they should be replaced. If the tires seem to have a choppy wear pattern or the vehicle bounces excessively over bumps, the shocks need to be checked.

Look at the struts or shocks and see if they’re leaking. Perform the bounce test and see if the vehicle bounces. Replacing the vehicle shocks and struts when they’re bad will create a safer and more comfortable driving experience, not to mention saving money in the long run.

on Dec 14, 2009 | Honda Accord Cars & Trucks

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Shocks and struts


When it comes to shocks and suspension, many people are confused as to what the shocks on their vehicle do. The job of the shock is to slow down and damp the movement of the body on the wheel. The real function of shock absorbers are to: 1) Prevent bottoming, that is slowing down the compression of the spring and create lifting force on the wheel.
2}Prevent the tires from bouncing up and down on bumps and absorb some of the energy.
3)Keep the vehicle from bouncing up and down on the springs before settling down.
I’ve put together a few simple tests you can do even if you have no mechanical knowledge about your Lexus at all. The same principle applies for strut suspension.
1}Push your weight down on the front or rear of your Lexus and release .The vehicle should bounce up and settle down. If it continues to bounce the shocks are worn out.
2)Drive over a small bump at a speed of 20 mph and the wheel should lift to it and settle down without a thud.(the thud is the rubber snubber)
3)At 60 mph the vehicle should rise and fall quickly over a dip, then stabilize itself after 2 rebounds..If it does not the vehicle will feel like it is floating and this makes the steering very unstable.
4)On rough roads does your vehicle shake and vibrate after you go a short distance? Well if it does, it is because the oil in the shock is overheating and starting to foam. That problem can be corrected with a nitrogen gas shock.
5)The last is to look at the shock or strut and see if it is leaking oil, if so it has no compression or rebound.
If your Lexus failed any of these tests either the shocks are worn out are mismatched for your vehicle. Some of the best shocks and struts on the market are Bilstein’s Monroe, and KYBs . And remember that maintaining the shocks and or struts on your Lexus is very important to the handling and tire wear on any Lexus.
This is a very good link for more suspension information

on Dec 13, 2009 | Toyota Sequoia Cars & Trucks

1 Answer

Shocks


On the hydro suspension system there are spheres which act as shock dampers. These are pumped up by the engine pump and run around 2400psi max.

As the wheels move up and down the 'ram' you would call the shock absorber displaces fluid into and out of the sphere/s. If these spheres are more than 6 years old, they go hard, because the nitrogen gas in them has leaked away. ( Gaseous Physics. They all do it. Nitrogen has a smaller molecual than the rubber trying to contain it.)

This nitrogen gas pushes a thick rubber diaphragm towards the hydraulic fluid acting as a spring. The small orifice the fluid has to pass through into and out of the sphere acts as a damper to the wheels movements up and down. A sensor on the axle/s keeps the pressure in the system at the correct ride hight.

You need new spheres if they have never been replaced.

Mar 29, 2014 | 1999 Bentley Arnage

1 Answer

I have a 1990 reatta convert and it seems to be leaking in a couple different spots inside the front driverside tire. It is not oil nor antifreeze. I got to believe it might be brake fluid. The car only...


Although if you suspect a problem with the wheel cylinder, it would be wise to have it checked but shock absorbers are filled with either gas or hydraulic fluid which bares a close resemblance to brake fluid and shocks are more likely to fail than a wheel cylinder. You can do a crude check of shocks by bouncing the car from the suspect corner and watching the action once you let go on a down-stroke; if it rises and drops once, it's likely still good, if it does it more than once before settling, the shock is probably partially empty.

Feb 10, 2011 | Buick Reatta Cars & Trucks

1 Answer

Clunking in the right front wheel, bounces all over the place


sounds like a loose or broken strut. a strut is like the old shock absorber.the struts are supposed to be better but they do go bad or break.you need to have your mechanic look at it.struts vary in price and you really don't want a shade tree mechanic for this job.the wheel will have to come off and the strut will have to come off.this controls the way your vehicle rides and drives.hope this helps and thank you for choosing fixya.com

Jan 09, 2011 | 2006 Pontiac Torrent

2 Answers

I have a 2001 Ford explorer xls. When going over a bumpy road it will sometimes keep bouncing. Is this an indication that my shocks are bad??


The job of shock absorbers is to do just that..absorb the bumps. If your vehicle's shocks wear out, or the gas charge or oil leaks out, they no longer have the ability to perform to their fullest, and what you'll get is that bouncy feeling going over bumps, and after you've gone over them it will continue to bounce.
There is an easy test you can do to confirm bad shocks and/or struts on any vehicle. With your hands, push down on the front or rear of the vehicle and get it bouncing. When you let go, the car should bounce no more than one complete up and down cycle. Any more than this and your shocks and struts are bad and in need of replacement.

Oct 20, 2010 | 2001 Ford Explorer

1 Answer

My back wheel when it hit a pot hole or any other bump in the street it bounce or not enough bounce to it ...the struts are ok an suspension is ok I was told so whats goin on..can u help me


I not sure if I fully understand your question. Are you asking should your car be bouncing more when you hit a bump or pot hole?

Well this is how struts and shocks are suppose to work: Struts and shocks are suppose to assist in providing a smooth ride, when you hit a bump or pot hole the struts and shocks absorb the force so you won't feel the full impact when driving. A good set of struts and shocks will eliminate excessive bouncing when driving or when you come across bumps and other mishaps in the road. So inconclusion if your car is not doing a whole lot of bouncing when you are driving that is a good thing, because that means your struts and shocks are doing their job and that means there is nothing wrong with them.

Oct 16, 2010 | 1992 Buick Park Avenue

1 Answer

2003 Pathfinder SE is bouncing


> Does this vehicle have shock absorbers or leaf springs?
It would be either leaf or coil springs; shock absorbers serve to prevent that continued bouncing and these may be simply shot.
The crude way of checking shocks still works somewhat:
- Position yourself on each corner of the vehicle and through repeated pushing down and letting the corner come back up, get some momentum and then let go at the bottom of the cycle.
If the shocks (which may be located within coil springs- McPherson struts) are still effective, the vehicle should rise slightly once and then settle. If they are blown, there will be some continued 'overshoot.'
The leaked fluid can be checked for odor; brake fluid is pretty distinctive while lubricants will smell somewhat like oil or grease. This could be from a shock but most are now gas filled rather than with a type of hydraulic fluid.

Jan 12, 2010 | 2002 Nissan Pathfinder

2 Answers

Do the struts need replacing after 80,000 miles. Our tire service called and said they need replacing on my '04 Altima


the strut only need replacing if there is alot of bounce in the car, or if there leaking, or the main reason is there broken. that would be the only reasons to replace struts

Nov 09, 2009 | 2004 Nissan Altima

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