“Undiagnosable” Peugeot 2008 Knocking

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SG56001235
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“Undiagnosable” Peugeot 2008 Knocking

Post by SG56001235 »



Hello all,

My 2015-plate Peugeot 2008 1.6 HDI Auto has developed a knocking noise when going over pot holes or rough roads. You can’t hear the noise when going on straight roads or even when going over large speed humps.

It seems to be noticeable when light braking to come to a stop and when going over rough roads and pot holes.

I’ve had it in three garages (2 local and Halfords) and they’ve had the wheels off and checked all of the obvious suspension and steering parts and all three have said they can not locate the noise but can hear it when they road test.

I’m not keen to start changing parts for the fun of it if I can avoid it.

Some forums have suggested anti roll bar links and bushes is the best place to start?

The car drives and handles absolutely fine. Recently had new pads and discs (after the noise started).

Any ideas would be hugely appreciated. Please see video above to hear the noise.
Last edited by RichardW on 27 Feb 2019, 12:08, edited 1 time in total.
Reason: Fixed youtube links - you just need the code at the end to make it work!
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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by RichardW »

Welcome!

Can't really make it out on the vid, but usually source of knocking over rough surfaces is the drop links. The OE ones usually last 60k+ though, surprised a 2015 car needs them already. Don't fit cheap ones, as they don't last!
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SG56001235
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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by SG56001235 »

Hi Richard

Thank you for that. The car has covered 40,000 miles, 28k of which has been over the past 12 months.

Some forums I’ve been searching are saying it is “definitely” the shock absorbers as this is a common problem on the 2008’s.

Might try the drop links and bushes first as that’s a cheaper repair.
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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by Peter.N. »

+1 for drop links.
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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by doctle »

Did you get under it and give the links a good wiggle
Oh buggle
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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by Peter.N. »

Often the links don't show any signs of wear while connected, you need to disconnect one end then you will likely find one ball joint is flopping about.

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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by Paul-R »

Trying to undo a less than very new droplink nut will usually destroy the joint anyway. At least in my experience. It's not just me is it?
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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by doctle »

Paul-R wrote: 28 Feb 2019, 16:02 Trying to undo a less than very new droplink nut will usually destroy the joint anyway. At least in my experience. It's not just me is it?


No not just you they are devilishly hard to get off without an impact gun. I think Vauxhall drop links had flats on the back of them years ago very handy dunno about now
Oh buggle
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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by Peter.N. »

No, just wire brush them and apply some oil, if they get tight, re tighten and clean with wire brush again and lubricate again. They will usually come of but I must admit to applying a grinder to them on occasion. Mine don't usually last long enough to get really corroded.

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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by sparksie »

I was going to say it must be virtually impossible to remove them intact, in salty UK.
Even over here, I find them tricky and I always run a die down the threads as far as I can before I start.
It can help to burn the nyloc out of the nut and squirt some plusgas in there, but even then the joint will usually spin with the nut after the first couple of turns and the hex hole usually provided to counter hold them whit an allen key is hopelessly inadequate. It often breaks or distorts the nose of the thread, under the lightest of pressure.
Yes, Opel (Vauxhall to you) ones used to have the flats, for an O/E spanner, but often don't nowadays.
Aftermarket links sometimes have 2 nuts at each end, one of which is a nyloc. These need extra care, when fitting. Make sure the thread comes through the nyloc nut. It usually won't, on the first attempt, with the whole joint spinning until the back nut contacts the bar, leaving the drop link vulnerable to the nuts loosening and falling off. Correctly fitted, the back nut should be at the bottom of the thread and the nyloc should have several threads sticking through at the top.
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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by Gibbo2286 »

Do your drop links not have an Allen Key hole in the end of the threaded part to hold them still whilst you undo the nut? My C5 ones certainly do.
Cleaning up the thread first still applies though.

Sorry :oops: just re-read the previous posts.
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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by ChrispyBacon »

Hello SG56001235

I was just wondering if your knocking problem was ever sorted and what you did?

We are experiencing exactly the same type of noise from our 2016 Peugeot 2008 and like yourself have taken it to 3 garages with no diagnosis.

It would be great to hear from you.

Thanks :)
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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by Peter.N. »

I don't find the allen key ones a lot of good if they have rusted, you can get them with flats behind the ball joint that you can get a spanner on, much better.

Peter
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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by Philhornsby »

Any updates on this yet as my car is doing the same
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Re: “Undiagnosable” Peugeot 2008 Knocking

Post by clydeowenp »

I have removed the drop link nuts on my Xantia using a nut splitter, needed to replace damaged rubber boot. Use carefully on each side in turn, give it a tap with a small chisel or old screwdriver and nut should fall in half. You could also try grinding both sides of the nut with a small grinder or even a course file, but take care not to damage the thread, wack it with a chisel or screwdriver and nut should fall in half. If reusing clean threads with a wire brush or die nut and fit a new nylock.

If you don't intend to reuse them cut them in half with a grinder or hacksaw. You should be able to bend the rod down (or up) and force it off the ball joint, then you can grip the ball with mole grips or similar and undo the nut.

All those I've had have had the hexagon in the end of the thread but these are usually rusty and if the nut is tight they strip out. These is only really useful to stop the pin turning when installing a new link.

I'm on my 3rd set now on the Xantia, first set lasted less than 25k, hope this helps.
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