Anti Roll Bar Question
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lost in espace

Original Poster:

6,449 posts

229 months

Monday 26th February 2018
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My T5 has had its drop links inspected by the local indi and declared healthy. If I go over a dip in the road, or a speed bump, the van just rides over it smoothly. Indi suggested new shock absorbers but this sounds unlikely to me.

If one wheel hits a pothole there is quite a thump. Does this sound like arb bushes and what is the best way to test them please? Or could it be top mounts?

RobXjcoupe

3,390 posts

113 months

Monday 26th February 2018
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What mileage has your van done?

lost in espace

Original Poster:

6,449 posts

229 months

Monday 26th February 2018
quotequote all
RobXjcoupe said:
What mileage has your van done?
190k Rob.

lost in espace

Original Poster:

6,449 posts

229 months

Monday 26th February 2018
quotequote all
And the bottom ball joints checked out OK he said.

RobXjcoupe

3,390 posts

113 months

Monday 26th February 2018
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How many miles have the shock absorbers done and have you ever changed any of the suspension bushes?

Leptons

5,479 posts

198 months

Monday 26th February 2018
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I’d agree with the garage. Your shock absorbers are no longer absorbing shocks.

Oldandslow

2,405 posts

228 months

Tuesday 27th February 2018
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ARB bushes would be my next suspect after drop links but any number of bits could be making that noise. The bushes are cheap and relatively easy to change though.

Nigel_O

3,549 posts

241 months

Tuesday 27th February 2018
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If hitting a bump in the road with both wheels doesn’t make a noise, but hitting a bump with one wheel does, then I’d agree that the ARB drop links are probably shot.

Drop links are probably the cheapest possible culprit, so it’s always best to look at them first.

Other possibilities could be bottom ball joints, shock top mounts or the shocks themselves.

lost in espace

Original Poster:

6,449 posts

229 months

Tuesday 27th February 2018
quotequote all
Nigel_O said:
If hitting a bump in the road with both wheels doesn’t make a noise, but hitting a bump with one wheel does, then I’d agree that the ARB drop links are probably shot.

Drop links are probably the cheapest possible culprit, so it’s always best to look at them first.

Other possibilities could be bottom ball joints, shock top mounts or the shocks themselves.
Ok so I will have a look at the arb bushes, as I have some drop links swap them anyway. Then move onto shocks and top mounts.

Cheers!

Craig

Vitorio

4,296 posts

165 months

Tuesday 27th February 2018
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If you trust what random spanners on the internet say, based on second hand (biased) information of what your car does, over your garage, it might be time to find a new garage. (or work out your trust issues)

Unless you are knowledgeable enough to inspect and diagnose your suspension yourself, id go with what the mechanic says

Oldandslow

2,405 posts

228 months

Tuesday 27th February 2018
quotequote all
lost in espace said:
Ok so I will have a look at the arb bushes, as I have some drop links swap them anyway. Then move onto shocks and top mounts.

Cheers!

Craig
Just to clear up in case I've not been clear. Drop links are not the same as ARB bushes. Drop links connect the arm of the ARB to the suspension arm(drop links have bushes in them which may be worn although your mechanic says not)). ARB bushes are in the brackets that connect the torsion part of the ARB to the chassis/body of the car. They can wear and then the ARB flops about and makes noises.

DoubleD

22,154 posts

130 months

Tuesday 27th February 2018
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Sounds like you need to find a new garage if you dont trust there opinion after they have had a good look at your van.

lost in espace

Original Poster:

6,449 posts

229 months

Tuesday 27th February 2018
quotequote all
DoubleD said:
Sounds like you need to find a new garage if you dont trust there opinion after they have had a good look at your van.
Garage took it for a test drive, but couldn't find anything wrong. Just suggested it might be the shock absorbers. Something is wrong, massive crashing over tiny potholes. Said drop links and ball joints were ok. To me it sounds unlikely it is shock absorbers. He didn't really do a full investigation, it was in to fix an oil leak.

Leptons

5,479 posts

198 months

Tuesday 27th February 2018
quotequote all
lost in espace said:
Garage took it for a test drive, but couldn't find anything wrong. Just suggested it might be the shock absorbers. Something is wrong, massive crashing over tiny potholes. Said drop links and ball joints were ok. To me it sounds unlikely it is shock absorbers. He didn't really do a full investigation, it was in to fix an oil leak.
To me it sounds very likely it’s the shocks. He’s ok’d the drop links and ball joints, the vans got 190k on it. Rattling or knocking over bumps would suggest worn joints e.t.c. Actually ride quality or crashing as you call it suggests shock absorbers. You’re obviously (understandably) looking for a cheap fix. Not going to happen.

lost in espace

Original Poster:

6,449 posts

229 months

Tuesday 27th February 2018
quotequote all
Leptons said:
To me it sounds very likely it’s the shocks. He’s ok’d the drop links and ball joints, the vans got 190k on it. Rattling or knocking over bumps would suggest worn joints e.t.c. Actually ride quality or crashing as you call it suggests shock absorbers. You’re obviously (understandably) looking for a cheap fix. Not going to happen.
Thanks Leptons, just looking for a fix and to approach it in a sensible way! Your comments very much appreciated.

grumpy52

5,930 posts

188 months

Tuesday 27th February 2018
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Shockers at that age if not totally sha##ed will be very tired , as will all the bushes .
If it's a knock over just pot holes the chances are it's either bottom arm bushes or ARBs any good mechanic on a ramp with a lever should soon find out which .

HustleRussell

26,025 posts

182 months

Tuesday 27th February 2018
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Ball joints such as those on the lower suspension mounting or anti-roll bar drop links are super easy to diagnose, unless your mechanic didn't look at them at all I'd take his word for it that they're OK.

It is probably shock absorbers with that proviso.

How long have you had the van, has any suspension been done already?

lost in espace

Original Poster:

6,449 posts

229 months

Tuesday 27th February 2018
quotequote all
HustleRussell said:
Ball joints such as those on the lower suspension mounting or anti-roll bar drop links are super easy to diagnose, unless your mechanic didn't look at them at all I'd take his word for it that they're OK.

It is probably shock absorbers with that proviso.

How long have you had the van, has any suspension been done already?
He told me the ball joints were ok one had slight play.

I have only just got the T5, ex NI taxi with no history been standing in a field for 2 years. The suspension has got a lot better since I have done a few miles.

You can't see the laquer peel from afar, but its rust free, massive and goes OK now its had an Italian tune up and the intercooler hoses properly attached.


HustleRussell

26,025 posts

182 months

Tuesday 27th February 2018
quotequote all
lost in espace said:
HustleRussell said:
Ball joints such as those on the lower suspension mounting or anti-roll bar drop links are super easy to diagnose, unless your mechanic didn't look at them at all I'd take his word for it that they're OK.

It is probably shock absorbers with that proviso.

How long have you had the van, has any suspension been done already?
He told me the ball joints were ok one had slight play.

I have only just got the T5, ex NI taxi with no history been standing in a field for 2 years. The suspension has got a lot better since I have done a few miles.

You can't see the laquer peel from afar, but its rust free, massive and goes OK now its had an Italian tune up and the intercooler hoses properly attached.

Once a ball joint has developed any kind of play it's really time for replacement. Sounds like it's time to 'do' the front suspension- that is, replace the front shock absorbers and lower ball joints, and anything else which looks a bit past it and is economical to do while it's all apart, get it geo'd and possibly budget for a track rod / end here and there, that should see it good for many miles to come. Anti roll bars etc can be worked on later if necessary without disturbing the geometry. Bad shocks will have been giving all that a pretty hard time.

TheAlastair34

369 posts

150 months

Tuesday 27th February 2018
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disconnect one drop link that makes the ARB nonfunctional see if the noise is still there then

i would think top mounts, to be fair non of those items will be alot so i would replace them and lower it with new shocks if it was mine