Soft brakes issue

Sur2799

New Member
Joined
Dec 15, 2020
Messages
2
Reaction score
0
Your Mercedes
Sprinter 2006 2.2 cdi
Hello all

got a 2006 sprinter 2.2cdi
Replaced pads and callipers got stuck
Replaced callipers
Bled the whole system
Brakes were still spongy but only with engine on


Just replaced the master cylinder and bled it

pedal still sinks with engine on only
Engine off pedal stays solid
Engine on it starts sinking and brakes get spongy
The car has no leaks anywhere has been bled correctly

anyone have any idea what this might be?
 

curious

Senior Member
Joined
Nov 17, 2008
Messages
576
Reaction score
350
Your Mercedes
Only the Vito left! W639/1 OM646
Went through all that (and more) with my 2007 Vito.

In the end it was corrosion on the caliper holding brackets. The steel had laminated rust that had expanded impeding the pad movement. (The clue was the uneven pad wear.) Knock/chip/grit blast or whatever, to get rid of the rust. Also, make sure the caliper sliders are free moving. The lower ones on each side of mine were far more reluctant to move than the upper ones.

Now the brakes are so ****** sharp they're almost too sharp.
 

curious

Senior Member
Joined
Nov 17, 2008
Messages
576
Reaction score
350
Your Mercedes
Only the Vito left! W639/1 OM646
Seriously? 'bl00dy' gets the star treatment?
 
OP
S

Sur2799

New Member
Joined
Dec 15, 2020
Messages
2
Reaction score
0
Your Mercedes
Sprinter 2006 2.2 cdi
  • Thread Starter
  • Thread starter
  • #5
Caliper sliders are luckily brand new as they are in the caliper itself. Il take the brackets off and give them a good clean. Fingers crossed it works as I’m getting so fu*king annoyed with it now
 

curious

Senior Member
Joined
Nov 17, 2008
Messages
576
Reaction score
350
Your Mercedes
Only the Vito left! W639/1 OM646
Trust me, I know your pain.
 

You lost your key ? Or maybe you need a spare! Your vehicle imobilliser does not respond anymore? WE CAN FIX THEM ALL !! Mobile ! Save Time and Increase Profits With us !
Top Bottom