ZitatAlles anzeigenI read lots of topics and replies about a knocking or rattling sound from the upper or lower bolts in the rear shocks. Most of them were from about 2013.
I had the same problem with Bilstein B4 two years ago and I had to change back to the Oemshocks at that time.
Now I have planned to keep my Oemsprings on my Fiat 500 S 105 HP in combination with the new Koni FSD's. That's the advise of the dealer and Koni itself. The dealer, Fiat and Abarth, is giving me warranty for noiceless driving.
My questions are:
-Its nearly 2018 now. Is the problem solved yet by Koni ?
-Do I have to ask for attention for certain facts about the bolts or the bushings with the dealer who is going to mount the shocks ?
I think they are going to use the bolts from my Oemshocks which I have now, but I am not sure.
Are there still knocking or rattling rearshocks with new Koni FSD's now a days ?
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Well I had that ratteling Koni FSD issue when I fitted the Abarth rattle Koni 500 kit for my 500 Abarth series 1 years ago. Many years later end of 2015 I got my Turismo series 3. That ones had the same issue after 2 or 3 months. The Turismo was fitted with Koni FSD from factory. Fortunately this time Fiat knew how to solve this issue. So I would expect this crap to happen again with a factory new Abarth but not yet sure. :-/
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Zyzigs do you probably know how they solved the problem ? And who did solve the problem ?
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And probably the most important: What was the problem. Had it something to do with play between mounts and bushings ?
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Fiat/Abath solved that issue by replacing the rear Koni FSD dampers not only with identical ones as done in the past not successful but with ones that were slightly different. They told me it was the cylinder moving in and out that caused that noise while I always thought it was the mounts and bushings. Whatever it was, the ratteling noise finally is gone and did never appear again, not even after two years.
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Thank you for this hopefull information !
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Zyzigs, what are your experiences with Koni FSD in general ?
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The Koni FSD is a good solution for street use if you improve your suspension and reduce movement inside the car. Therefor I recommend pu-bushes.
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Hans, for me the Koni FSD was a great improvement. My 500 Abarth was harder before. The FSD made it more comfortable. I had strong forces in the steering when accelerating in the 2nd gear before which are gone now. The FSD only feels a bit dangerous at emergency brake from high speeds, but beside this it feels quite good for everyday to me. Maybe not so for use on a race track where it may feel to soft.
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Thank you. This is exact what I had hoped you should say.
And none of you had rattling problems in the back ?
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We've got a Abarth 595 of the third series, build on 5th january 2016. It has mounted the Koni FSD and we didn't have any trouble with the shock absorbers yet. In my opinion it is a great solution for the use on the street, even for faster cornering. But I defently recommend to reduce movement in the suspension with powerflex bushes. We'll also use the DNA anti rollbar kits for the front and rear soon which should also improve the suspension very much!
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