"doc518" wrote in message
...
My Xantia has an intermittant problem. Sometimes, at low speed , when I
start to brake the engine seems to race and the car starts to speed up.
Very disconcerting !
Problem goes away the instant the brake is released and then I can brake
normally.

Heard of this before ????

Is it possible that there is a fault with the brake servo than upon breaking
it allows air into the vacuum line, thereby increasing the engine speed?