Originally Posted by
JordanSpencer
Hi,
Many thanks for your responses.
The issue was diagnosed today with three causes.
1) there were two leaks in the air flow pipes
2) the car needed re-balancing...
3) the pedal box was faulty!
I would put it down to the leak on a pipe Jordan. Might even be a loose boost solenoid pipe. Glad your getting it sorted, keep me updated as i have an st 2 and more info the better.