Stevo210

iTrader: (4)

As above..... Brakes are great in general use and abuse, but if you launch from a junction turning right or at a round about (obviously going right as well) when you immediately apply the brakes the pedal goes almost to the floor with hardly any stopping power. The pedal needs to be pumped until they are back to normal.

The fluid has been flushed properly twice (5.1) and this makes no difference.

Please help, I dont want to be caught out when I really need my brakes.


Thread also in Brakes Section too.

merlin24

iTrader: (1)

Are you getting "pad knock-off" due to a worn wheel bearing ??

Stevo210

iTrader: (4)

mmmm, not sure what that is? Do you mean that the movement in the disc pushes the pad away from the disc??

Pretty sure the wheel bearings are ok, but you never know!!

Only seams to be after a right turn, must be a simple explanation! Thought something to do with the servo, but just a stab in the dark really.

GC8

There has to be a physical cause; and a right hand turn wont affect the servo... It does sound as though the pads are being pushed off the discs face, so you have to pump until theyre back in contact; only then will you get proper effort.

D1CCY

If there was a servo prob you'd have a high hard pedal and no stop. I think Merlin is right about pad knock off especially as it happens when you turn one way. I had a very slightly loose NSF hub nut and this gave a disconcerting variability in pedal travel.

Stevo210

iTrader: (4)

Yeah exactly, the pedal still feels to go down a little too far for a few miles after the initial "OMG where are my brakes", then seams to settle down and get back to normal.
For the pad to be pushed off that much, surely the wheel would have to have some serious noticeable movement??

deangtiuk

iTrader: (3)

I had the same issue with mine, I checked everything until i got to the point where i connected a mitee vac to the servo pipe, under hard acceleration with no lift of the throttle pedal I noticed that the servo would gradually loose vacum, once I came off throttle the vacum built back up in the servo. Just a thought let us know how you get on.

Stevo210

iTrader: (4)

Cheers mate... what the hells a Mitee Vac and how did you cure it, replacement parts or New Servo??

Black-Hawk

iTrader: (4)

I had a brake problem like this on a previous car, had to swerve around the odd car to avoid a colision on more than one occasion, turned out to be a damaged abs fonic wheel following a local garage working on it.

deangtiuk

iTrader: (3)

Sorry about the spelling, Mityvac

I changed the one way valve in the servo pipe which cured most of it but the other day I was coming down a fast "A" road came to an Island and the car didn't want to stop again I think it was the fact that I was on full open throttle for so long the servo lost vacum, either that or the brakes were fading due to heat (unlikely as i hadn't used them before comin to the island) and weather conditions were dry.

Stevo210

iTrader: (4)

I'll have a look into that then, thanks for your help mate. I'll also get my bearings and hub nuts checked out as well.

Turbotits

iTrader: (2)

Had this on mine only on round abouts and right turns. Turned out to be the nearside front wheel bearing, If you jack the car up and check for play theres NOT likley to be any. You need to undo the centre drive shaft nut and then check for play. The pad gets pushed back in the caliper. Symtoms are there is a lot of pedal travel on first push then if you punp pedal again all is back to normal.

GC8

You seem to be persisting with the servo as the cause of the problem: it isnt. If you lose assistance then you get a high hard pedal.

psigeek

iTrader: (17)

If it turns out to be wheel bearings are they best changed in pairs?

Stevo210

iTrader: (4)

Ok I'll rule the servo and concentrate on the bearing. Is it good practice or a waste of money to change both bearings?

psigeek

iTrader: (17)

As above also awaiting any advice regarding changing in pairs. Here's a fitting guide I've come across Wheel Bearing Replacement - Guru's guide w/pics - ScoobyMods

There's a company selling OE quality wheel bearings called Import Car Parts has anyone used these?

PeeVee

iTrader: (1)

Yup, The fault is almost certainly a N/S wheel bearing & not the servo (this would cause a solid pedal not a long one)

These do not need changing in pairs, just sort the one thats knackered.

Its the hub nut that holds the bearing together, so if you undo it to check the bearing you will find that it will have play in it even if it's ok, so jack the car up, grap the wheel & try to tip the top & bottom of the wheel in and out to see if you have any movemnt. There should be none at all & you would be surprised how little movement you need to cause your problem.

Phil

psigeek

iTrader: (17)

That's perfect thanks! Could explain for me why the n/s/f tyre is starting to wear slightly on the outside and I get a hamster squeak turning right.

Stevo210

iTrader: (4)

Thanks Phil, as usual sods law has struck again, 3 days ago I paid £90 to get a full geom set up..... That'll be down the drain when I disturb the hubs. When will the car stop milking me dry

Fantom

It won't

Stevo210

iTrader: (4)