Very slight tap / knock over speed bumps at lower speeds - thoughts?

Apologies for hijacking the thread. I have a 21 t32 SWB Kombi with Koni kit fitted by CRS. 18k miles. I have this exact random knocking noise from the drivers side. Had it into a garage today for new drop links. After inspection the drop links are fine and nothing else found. Will head back to CRS and see if Steve can work his magic. In the meantime I will be watching this thread closely!
I’m headed back up there on weds for him to look at so will let you know.
 
Not sure if this will help anyone on this thread, but I had this annoying metallic noise coming from the front (sounded like front wheel on passenger side) and audible whenever the wheels turned. Acceleration or braking didn't seem to stop it and it was even audible when I turned off the engine and freewheeled to test.

Had my local and indy and VW take a look, but neither could identify it. Also had front arms and drop links replaced. Then, just last weekend when searching for another clue as to what to try, I stumbled across a suggestion of pulling the handbrake up slightly when going around 5/10mph. I tried this Monday morning and it immediately made the metallic rattle disappear.

The van was in for it's All-In service on Tuesday and I gave them this info (and a little nudge that I was certain that it was linked to the handbrake, despite them being sceptical).

Sure enough, handbrake tightened up and my rattle is gone! I'm honestly so chuffed as it was a real annoyance, as well as a worry that it might develop into something more serious.

Long post, but upshot is that if youve got a rattle that you can't get to the bottom of, I'd recommend just giving your handbrake a slight pull up when driving (not enough to even turn on the brake light) and see if it stops it...
 
Hi, I too had a strange noise coming from my front suspension a few months after CRS upgraded it (T30 6.1) I returned and saw Steve who rectified it by fitting some sleeving on the bottom coil of the spring. When dismantled you could see there had been slight movement between the spring and the seat as it had worn a tiny bit of paint off and was shiny. The noise I was getting was very random and I suspect not what you're experiencing but its something else worth checking as the sleeving cured mine.
 
Not really - had 3 garages look at it including @BognorMotors and nothing to see mechanically.

Haven’t had a loud clunk in a while - just slight ones over harder speed bumps.

Will head back to CRS later this month to maybe get them to pull apart and invest
Not really - had 3 garages look at it including @BognorMotors and nothing to see mechanically.

Haven’t had a loud clunk in a while - just slight ones over harder speed bumps.

Will head back to CRS later this month to maybe get them to pull apart and investigate
Look forward to having a look at this !!
 
Tks, please do.
Right - visit to CRS done.

After mucking around a bit and copious amounts of speed bump driving couldn't nail anything down really.

Steve and co found one of the springs was fouling a holder on the passenger side strut so adjusted that, and then managed to tighten up a driver side drop link (new fitted by another garage) a full turn. Looks like there's nothing up with suspension so my knocking isn't really solved.

Maybe it's brakes as thought etc, but I guess for now I'll just leave it until a big knock happens again or something falls off. Drives fine and whatever so happy to put it to bed for now.

Edit - also will say was a classic 'didn't really do it when there' situation as well.
 
I’ve got the same problem. Full set up completed by CRS. Drivers side knock. Most of the people complaining of the drivers side knock seem to have just had the same setup of Koni shocks and teknic springs. Wonder if there is something in that?
Looks like another 10 hour round trip to Cannock is required
 
Right - visit to CRS done.

After mucking around a bit and copious amounts of speed bump driving couldn't nail anything down really.

Steve and co found one of the springs was fouling a holder on the passenger side strut so adjusted that, and then managed to tighten up a driver side drop link (new fitted by another garage) a full turn. Looks like there's nothing up with suspension so my knocking isn't really solved.

Maybe it's brakes as thought etc, but I guess for now I'll just leave it until a big knock happens again or something falls off. Drives fine and whatever so happy to put it to bed for now.

Edit - also will say was a classic 'didn't really do it when there' situation as well.
What do you mean by “fouling a holder” sorry?
 
What do you mean by “fouling a holder” sorry?
There’s little raised parts on the shock where the spring sits that holds the spring in place and when compressing, the spring has been hitting it. Interestingly though that was on passenger side

And yeh long. A few people who’ve been to CRS have mentioned it. But a lot of people haven’t got it as well!
 
I’ve got the same problem. Full set up completed by CRS. Drivers side knock. Most of the people complaining of the drivers side knock seem to have just had the same setup of Koni shocks and teknic springs. Wonder if there is something in that?
Looks like another 10 hour round trip to Cannock is required
We do sell thousands of these , and the complaints about noises are usually nothing to do with the shocks and springs . Drop links and mounts usually the culprit . , occasionally D bushes .

I have a set of Active Koni shocks on my van at the moment that a client had fitted and was complaining about noises , he had fitted new drop links , but still complained about noises and asked if he could send them back for me to check them ? He had fitted some standard shocks on to the van and the noise stopped . On arrival here we could immediately see the issue , CHEAP drop links which didnt have a big enough surface area to bite nicely to the shock bracket had worn into the metal and even though it was tight , it moved on certain bumps . see pic 1 . I took the shocks fitted them to my T32 and swapped the left to the right so we had 2 fresh new drop link holes holes , with proper drop links the car is faultless after 2 months of testing , they are still in and the ride is superb . If this client is on here and reading this please get in touch as i would like to return them to you

The other rare issue we have seen is the springs touching the support tab of the spring plate . as per second picture . We felt that this was probably caused by the Press that punches the plate out , the tab wasnt perpendicular to the base and it touched the spring second coil . there are so many variants here , Weight of the van the spring used the length of the bump stops , all factors which can influence this .
Please check this @garwoodfire .

Thinks to remember about the plague of the drop link on a transporter , The drop links take more stress when we lower the vans , ( the lower the more stress ) and when we fit 20 inch wheels . these are the common factors that we dont take into account chasing noises on the suspension

Top tip , if you have a suspected drop link noise , remove one completely , if the noise vanishes, swap the shocks left to right and fit new drop lings , 99.99 % this will sort it out .
If the issue is the spring touching coil 2 , the tab needs to be knocked upright to clear the issue

Worn  Drop link bracket.jpg

Touching of spring on shock plate.jpg
 
We do sell thousands of these , and the complaints about noises are usually nothing to do with the shocks and springs . Drop links and mounts usually the culprit . , occasionally D bushes .

I have a set of Active Koni shocks on my van at the moment that a client had fitted and was complaining about noises , he had fitted new drop links , but still complained about noises and asked if he could send them back for me to check them ? He had fitted some standard shocks on to the van and the noise stopped . On arrival here we could immediately see the issue , CHEAP drop links which didnt have a big enough surface area to bite nicely to the shock bracket had worn into the metal and even though it was tight , it moved on certain bumps . see pic 1 . I took the shocks fitted them to my T32 and swapped the left to the right so we had 2 fresh new drop link holes holes , with proper drop links the car is faultless after 2 months of testing , they are still in and the ride is superb . If this client is on here and reading this please get in touch as i would like to return them to you

The other rare issue we have seen is the springs touching the support tab of the spring plate . as per second picture . We felt that this was probably caused by the Press that punches the plate out , the tab wasnt perpendicular to the base and it touched the spring second coil . there are so many variants here , Weight of the van the spring used the length of the bump stops , all factors which can influence this .
Please check this @garwoodfire .

Thinks to remember about the plague of the drop link on a transporter , The drop links take more stress when we lower the vans , ( the lower the more stress ) and when we fit 20 inch wheels . these are the common factors that we dont take into account chasing noises on the suspension

Top tip , if you have a suspected drop link noise , remove one completely , if the noise vanishes, swap the shocks left to right and fit new drop lings , 99.99 % this will sort it out .
If the issue is the spring touching coil 2 , the tab needs to be knocked upright to clear the issue

View attachment 274332

View attachment 274333
Would I be able to come back and see you about it at some point? When you did mine I had new shocks, springs, drop links, top mounts, H&R anti roll bar, all replaced by you guys. Be good to see if you can find anything untoward
 
Would I be able to come back and see you about it at some point? When you did mine I had new shocks, springs, drop links, top mounts, H&R anti roll bar, all replaced by you guys. Be good to see if you can find anything untoward
With pleasure , we can check everything for you .
 
Had knocking on the crafter and thought it was the suspension, turns out it was the inside lip on the disc. Been back and forth with kombisnaps about it as I have it on the t 6.1 also. So need to get it sorted but I don’t drive it much so it doesn’t bother me.
That’s strange. Did the knocking occur as you were going over bumps then?
 
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