Had this problem recently with s2 turbo. When your at standstill and idleing away, if u press the brake pedal the revs increase, and i've tried it a few times and it will always do this, any ideas as to whats up with it?

cheers

 

Normal, keep pressing it fast, revs will go up even more.

 

my girlfriends s2 turbo doesn't do it at all??????? i'm sure its an air leak or something along those lines. anyone had experience as what it may be?

cheers

 

check your master cylinder and brake servo are working correctly I'd say your brake servo's NOT (drawing in air)

 

hmmmm, interesting how can u deffo's tell if it is the servo? brakes are fine on the car. If its replaced is there a standard but uprated servo you can fit on?

cheers

 

mate, i promise you its normal, think about it, when you press the brake, you are reducing the amount of air room in the servo, this will pressure it back to the inlet manifold, so when the air pressure goes up, touch more fuel will be added so the revs will go up a little, i even tried it for you today in My Series 1, it only rised a minimal amount, and My XR2i does it.

Hope u can see what i mean.

 

yeah mine s1 does the same i wouldnt worry bout it, til brakes aint workin anyway, i never seen it as a problem, better to go bit high than than lower when brakin i would of thought

 

yeah mine s1 does it slightly i wouldnt worry bout it, til brakes aint workin anyway, i never seen it as a problem, better to go bit high than than lower when brakin i would of thought

 

suppose u guys are right when u come to think about it. oh well it'll keep then i suppose for the time being.....

cheeRS

 

mine .. the car starts to die.

 

hmmm, try turning the idle up a little, otherwise it might just be an air leak which is usually always 90% of the problem on a turbo'd car

cheers

 

My s1 also dies when i push the brake, if i holfd the pedal down then it will stall completely

An air leak sounds most likely, but does anyone know if this means that the air leak is definately in the servo or would there be the same symptons if the leak was for example the inlet manifold gasket or anywhere else?

I'm trying to establish wether i should replace the servo before anything else

Any help is greatly appreciated

 

my revs rise when press the brake pedal several times i think its normal

 

it ain't normal to drop though