Help 🙂

[Ryuk89]

Hello everyone , sorry i am gonna write a long and weird seek for help but all garages have no clue whats wrong with my motor and i rly love it .
Ok
First to start with every time i break the car pulls to left together with the steering wheel.
When i break harder from higher speed the steering wheel shakes only in certain moments not all the time.
When i accelerate rly quick steering wheel shakes again , specially when is on uneven road .
When i pass on uneven surface with 30-40-50m the steering wheel shakes for a bit untill car stabilise, and is much more if i break in that moment. Got new disks and pads a year ago but it feels something is not right . Car is very unstable when it comes to slidly uneven surface and specially when i apply the break and the reason i seek for help is coz it does not feel like bend discs. Any idea would be appreciated coz garages asking to change 1by1 lot if parts . Thanks in advance and i hope i find the answer finally.

 

[Ryuk89]

My car is c180 2007 with w203

 

[markjay]

I would swap the two front wheels (i.e right-to-left and left-to-right) first just to eliminate any wheel or tyre issue.

If it's not the discs than it could be any number of front suspension components and unless an obvious fault can be seen then unfortunately the only way is to replace suspect parts one at a time.

 

[markjay]

On another note, what the mileage on the car? Do a search for M271 camshaft sprocket wheels premature failure..........

 

[optimusprime]

Pull to the left - right brake inoperative .Or left brake is pulling up due to no ferodo on the pads Needs both front brakes checking .

 

[StMarks]

Fwiw if it were my vehicle, I would be looking for at the front right (offside) caliper.
If (as I would suspect) it is seized, then the braking effect from that wheel will be dramatically reduced under normal braking -hence pulling left.
Everything seems to me to be able to be linked to a binding/seized front O/S caliper (although if one is that bad, probably best to have both inspected).
Hth

 

[JHS]

Front shocks would be high on my list of suspects! Closely followed track rods and ball joints.

 

[Ryuk89]

Thanks for the reply's guys maybe the callipers are responsible for the pulling bit but why shaking ? And why shaking under breaking or accelerating on uneven surface ?
Also i had new disc and pads when i bought the car about year and a half ago , symptoms were there but way way less .
Like i would change the callipers after inspection they are not that expensive anyway but why the shakes ? Do you think coz of calliper new disc can go bend very quick or should i suspect tires too ?

 

[StMarks]

Thanks for the reply's guys maybe the callipers are responsible for the pulling bit but why shaking ? And why shaking under breaking or accelerating on uneven surface ?

Thanks for the reply's guys maybe the callipers are responsible for the pulling bit but why shaking ? And why shaking under breaking or accelerating on uneven surface ?
Also i had new disc and pads when i bought the car about year and a half ago , symptoms were there but way way less .
Like i would change the callipers after inspection they are not that expensive anyway but why the shakes ? Do you think coz of calliper new disc can go bend very quick or should i suspect tires too ?

Because if caliper piston(s) is/are binding (or if they are unable to slide properly due to the sliding mounting system being seized) then instead of the pads being able to back away from the disc after braking they remain in contact or very close. Then whenever the caliper is jolted (uneven surface) the pad momentarily rattles against the disc creating a pulse like vibration. The "shaking" would be the uneven braking between front calipers at the point when only one side is engaging against when they both engage.

Yes. If the calipers are indeed causing this issue, uneven wear to the new discs and damage to other components (caliper mounts etc) is very likely.

It is easy enough to do a quick initial check. Just jack the front up so both wheels are off the ground, then see how freely they turn (relative to each other) and how even the resistance to turning is with a light brake pressure applied. (engine off).

Fwiw if my guess is correct and the caliper(s) are causing this, it is potentially quite dangerous.

Hth

The

 

[Smiley]

As above the offside brake caliper would be the first inspection - it may be that there are multiple faults with either the brakes, tyres or suspension components. Given the nature of your faults then any half decent mechanic would be able to find out what is wrong. So you need to find a new garage / mechanic if you can not look yourself. You do need to find the cause(s) because it is dangerous and the car would be deemed not to be roadworthy if it were to be inspected.
Mechanics usually struggle to find faults when there are minor or intermittent symptoms - but yours are obvious.

 

[Ryuk89]

Alright going shopping for callipers as today i find out that most prob thats the issue as i only touch the discs from inside to see the wear and out side , from inside on the left side was having a very big wear on the edge i could feel compare to the outside one , the right side is barely worn. What brand do you guys recommend as for callipers and brakes with discs , so far i got a very good offer for “ferodo” “trw” brands for callipers.
Thanks for the help so far i will keep you updated

 

[colinallcars]

Alright going shopping for callipers as today i find out that most prob thats the issue as i only touch the discs from inside to see the wear and out side , from inside on the left side was having a very big wear on the edge i could feel compare to the outside one , the right side is barely worn. What brand do you guys recommend as for callipers and brakes with discs , so far i got a very good offer for “ferodo” “trw” brands for callipers.
Thanks for the help so far i will keep you updated

Sounds like you need discs and pads as well. The advice being given here really needs to be verified by inspection, are you sure you’re competent to do this? It’s a safety critical area you’re delving into. If not, get a garage to do it, doesn’t need to be an MB one.

 

[Ryuk89]

I am not doing it my self and yes it will be disc and pads too And tires

 

[Smiley]

If you have one disc that is worn more than the other one then the car has either had one disc replaced (pretty unlikely but possible) or there has been a problem with the brakes for thousands of miles.
Before spending £££ on parts the car needs a proper inspection with the wheels off - it could be as simple as sticking pads in the sliders - it is a "problem with the caliper" but it does not mean that you need a new caliper. Similarly with the discs and pads - just because one side is a bit more worn than the other does not necessarily mean that they both need to be changed - it depends how worn the more worn one is. And at the end of all that there is no guarantee that this will remedy the symptoms.
As said before you really need to find someone competent and trustworthy to take a proper look for you.
Whereabouts are you? Someone may be able to recommend someone in your area.

 

[W1ghty]

Thanks for the reply's guys maybe the callipers are responsible for the pulling bit but why shaking ? And why shaking under breaking or accelerating on uneven surface ?
Also i had new disc and pads when i bought the car about year and a half ago , symptoms were there but way way less .
Like i would change the callipers after inspection they are not that expensive anyway but why the shakes ? Do you think coz of calliper new disc can go bend very quick or should i suspect tires too ?

If the shaking is under acceleration, it’s not the calipers or any other brake component

 

[JHS]

If the shaking is under acceleration, it’s not the calipers or any other brake component

I would check the simple things like track rod ends and ball joints first, then the shocks and lastly the brakes. Sticking brakes would cause pulling to the side when braking, for sure, but not convinced that it would cause steering shake.

 

[Ryuk89]

Just to update you on my problem , after inspection the mechanic dont think is the callipers as when you apply break and release the wheels the calliper does not stay compresed and the wheels spin free , another mechanic suspect one of the rear arms at the front , it will get checked tmr and another mechanic suspect the breaking box i think he called it abs something - its box with pipes under the bonet at the left. Will update you after tmr

 

[Ryuk89]

Brakes checked they brake nearly perfect on each side as well as the one in the back , suspension was checked again on machine that shakes it nothing could be found , changing the break fluid atm to see if thats gonna make any difference , what the mechanic said was it does not feel like bend disc coz it only occurs under big pressure on high speed. Any suggestion here so far ?

 

[JHS]

My money is still on a suspension fault. Check all the joints and mounting points, including the steering.

 

[Ryuk89]

Update : new disc and pads mercedes one fitted less shake but problem still there mechanic suspect frame bushes as it very presistant specially when you breaking but on high speed and slide left turn.
And i am staring to believe i will have to go down the road of changing all the shit one by one will update next week again