Question about Pontiac Grand Am

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I think that the rear passenger sider shock absorber is broken. When I drive my car, it makes a metal banging noise, especially when I go over bumps. Is this really the problem? And if so, how much would it typically cost for it to be repaired?

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It doesnt mean its the shock if its banging noise its probably just the top plate big differense $$$ top plate 40$ 1 hour labour hope its a fix and a fixya for me thank you pierre

Posted on Aug 09, 2008

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Super stiff left rear suspension


If there is no noise when driving the car over a flat bump-free surface, it tends to suggest that the problem may well lie in the shock absorber or spring .. or .. as someone else has pointed out .. the bushes. A worn rubber bush permits metal to etal contact - the tapping noise .. and can also cause vibration.

Pushing down on the corner of your car should feel stiff as you are pushing against the shock absorber. If the spring is broken your car well make a heavy 'crashing noise' over each bump. Though any rubberised bush that is worn can also cause the same sound when driven over a bump.

If the car makes that tapping noise even when driven over an even surface it cold point to bearing troubles. However, as you say that it is bone jarring when up to speed suggests the problem lies in either a loose wheel nut, an out of balance or damaged wheel rim or worn rubber bush - or something worn that allows metal to metal contact.

The easiest solution - and the cheapest - is to take your car to a workshop. They will tell you within minutes what the problem is. If you try and replace parts yourself to cure the problem .. well .. usually we replace the wrong part and end up paying more for parts before we find the problem. The other point to bear in mind is that it isn't always easy to identify something like a worn rubber bush when the car is standing on the ground. It's easier when it has it has the weight lifted from its wheels - on a hoist.

Get your car to a workshop and let them identify the fault. You can change the worn parts yourself

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1999 lincoln navigator rear suspension loud bang when going over speed bumps also rear rides higher than front? Compressor is fine all air hoses are fine front air shocks 1 year old rear shocks 1 year old...


Check your rear shocks. On the fender, push with your body going down. Upon releasing, your car should go up and down one time then settle. If it goes beyond or hesitate to move, you have a problem with your shocks. I think you also have a problem with the shock absorber bush. It does not matter if you have a new or old shock absorber. The lifespan of the shocks depends on the way you drive on bumpy roads.

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1 Answer

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Could be the upper strut mount, or one of the control arm bushings.

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could be a broken belt on the tire could be a wheel bearing possibly a brake caliper hanging up or just something came loose and is rubbing on your tire needs to be lifted up and inspected it may mean removing the rt rear tire for a closer inspection is the car stopping ok if not don't play with your brakes

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I have done shocks bilsteins front sway bar eibach brakes diff gasket and cover performance stering stablizer all tie rods all 4 bALLJOINTS NEW 20 INCH RIMS AND BRAND NEW TIRES FUTERA GOODYEARS 3 DIF...


I can think of two things not easily seen that can cause a banging when hitting small bumps;
The sway bar end links could be loose or broken.
The rear shock bolts, the lower bolt that holds the shock onto the rear axle, I've seen that mounting hole down there get enlarged, allowing the shock bolt to move about when hitting small bumps, causing a banging sound.
Check those two things out.

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1 Answer

When i drive my car there is a very loud klanking sound coming from my rear end it starts at about 20 miles mph and gets worse as i speed up, what could be the problem?


It could be a number of items.

1. The rear suspension components.
The noise may be emanating from a failed shock absorber.
There could also be a number of failed rubber bushes in one or more rear suspension components that is allowing metal to metal contact.

2. If an exhaust hangar on the exhaust system has broken the exhaust system will swing and bang against the underside of the vehicle.

You need to get the car on a hoist with the rear wheels removed to inspect all items and identify the likely source of the noise.

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Check your exhaust and rear suspension for something loose or broken. Problem could be the exhaust, a hanger or cracked pipe. In the suspension it could be shocks, worn bushings, track arms etc. When a problem like this happens you have to get under the car and grab and try to move things checking for loosness. In general try to see what is loose enough that a bump causes it to rattle or bang. Other than inspecting the rear area there is no short cut that can be taken to solve the problem. You don't want to just start replacing parts hoping to fix the problem, that can be expxnsive and unnecessary. Good Luck!!!

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HI, this noise can be caused by worn shocks,even if the bushings look good, you can remove one of them and check if is hard to constracts ,if not they must be replaced,

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It could be your subframe as well big problem with E36's. Also you can check your Rear Shock Mounts in the trunk by removing the carpet, they are under the speakers. Also check your brake pads, the little shim could have fallen off causing your brake pad to rattle over bumps. And check all your heat shields.

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