Advice on Hot Braking Vibration W204 350cdi
09-12-2019, 09:31 AM
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W204 350 CDI D6
Advice on Hot Braking Vibration W204 350cdi
I am experiencing a shuddering and Vibration when braking, but only when my brakes are hot. And a slight knock on the nearside front.
My first port of call was to replace the control arms, i have done both front upper and lower arms on both sides of the car, this has certainly helped a bit but i am still getting the braking issue and knock when going over speed bumps.
After this i replaced both front discs and pads (brembo) and tried to run them in as best i could without overheating or keeping my foot on the brake when at a junction or lights etc. Initially i didn't notice the issue but i was careful on my brakes for a good 400 miles.
As soon as i felt they had time to bed in once they got hot i experienced the same vibration and juddering.
The best way i can describe is it feels like warped discs but i doubt they are, if braking hard when your almost stopped it feels like the brakes are pulsing on and off there is a distinct change in braking force, this repetition gets slower as the car slows, (its not the ABS firing either).
I also changed my springs about 5 months ago and i am due to swap the dampers out as soon as they arrive.
My drop links have also been done when i did the springs also the front ARB was swapped for one from a 63 all bushings in good condition.
Both front wheel bearings have been done
In summary i have changed the following
Other than the dampers i am not sure what is left in this equation, any advice would be really good
Thanks in advance
My first port of call was to replace the control arms, i have done both front upper and lower arms on both sides of the car, this has certainly helped a bit but i am still getting the braking issue and knock when going over speed bumps.
After this i replaced both front discs and pads (brembo) and tried to run them in as best i could without overheating or keeping my foot on the brake when at a junction or lights etc. Initially i didn't notice the issue but i was careful on my brakes for a good 400 miles.
As soon as i felt they had time to bed in once they got hot i experienced the same vibration and juddering.
The best way i can describe is it feels like warped discs but i doubt they are, if braking hard when your almost stopped it feels like the brakes are pulsing on and off there is a distinct change in braking force, this repetition gets slower as the car slows, (its not the ABS firing either).
I also changed my springs about 5 months ago and i am due to swap the dampers out as soon as they arrive.
My drop links have also been done when i did the springs also the front ARB was swapped for one from a 63 all bushings in good condition.
Both front wheel bearings have been done
In summary i have changed the following
- All four springs
- Front upper and lower control arms,both sides
- Front Sway Bar
- Front wheel bearings
- Front Discs & Pads
- Drop links both sides
Other than the dampers i am not sure what is left in this equation, any advice would be really good
Thanks in advance
