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Old 12-06-19, 08:03 AM   #1
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Default 406 Knocking sound rear

Hi

I have checked the forum but I'm not 100% sure about the problem with my PUG.

When I drive on a bumpy dirt road or over speed bumps with my 2001 406 Sedan (Mileage 215000km) there is a knocking sound that comes from the back end. It's definately at the back wheels or suspension.

I am taking the vehicle in to a suspension shop but the guys here are not so clued up so I would appreciate it if someone could help me understand what I should be looking for.


Thanking in advance!
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Old 12-06-19, 09:25 AM   #2
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The favorite item to cause a knock is a track rod, I`ve replaced loads of them.
Its item 13 in the image. It has a ball joint one end and a simple bush on the other. Its just a simple nut and bolt job, BUT , the bush end fitting is adjustable. It would be best to find a Peugeot mechanic who has experience with this job. Its just like replacing a steering track rod, get it wrong and you will have tyre wear.
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Old 12-06-19, 09:56 AM   #3
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Default Thanks for the info!

Thanks for the info Old Pug! Much Appreciated!
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Old 12-06-19, 03:02 PM   #4
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Mind you there are lots of other items that could be worn and cause a knock.That track rod is I think the most common. Best to get a Peugeot mechanic to check it all over.
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Old 12-06-19, 03:22 PM   #5
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Yes thanks I am taking it in to a general suspension shop.
(I don't have a Peugeot agent near me)

I thought I would first ask here so that I could get an idea of what the problem could be.

Much appreciated!
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Old 20-06-19, 10:18 AM   #6
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My money is on the drop links. These things seem to wear out quite fast if you travel on lumpy roads and they make a hell of a noise when they go - when my front ones failed the first time I thought it was some major suspension component that had gone. Nope, just the drop links.

When the rear ones go you there's a kind of "uncertain" feeling of the rear end when you throw it in to a turn a bit hard. When they're tight, the tracking feels solid and positive.

They are an easy and cheap replacement so you can do the "suck it and see" test - change them and see if it goes away. They are the part labeled 3 in the diagramme above.
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Old 24-06-19, 09:02 AM   #7
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Thanks Hermano!

I will check the Drop links also!
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Old 14-07-19, 01:50 PM   #8
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Thanks for the info.

I would like to buy the Rear Track Rod's and Drop links for my PUG off the internet but apparently there are 2x different parts.

Could someone be so good as to supply me with the OEM numbers for the spares I need?
(Rear Drop Links & Rear Track Rod's)

The Last 8 digits of the VIN are: 81252910

Thanks!
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Old 15-07-19, 06:24 PM   #9
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Rear drop links.

Guaranteed.
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