Idle Dropping Sometimes Stalling

[azzapage]

hey guys righto on my 04 xr6 turbo ive got an issuse and its something to do with the vacum

anyway got the ute back in november and was having a look around the other day and where the vacum line is up on the passeger side that goes to the brake booster ect and manifold anyway well nothing was blocking it and the idle revs were sitting around 800rpm and the other day I blocked it up and hooked my boost guage up to it o get a reading and the rpm dropped to about 600 which my mate said was normal but the issuse I have it when im driving and pull up to the lights and put the clutch in the idle driops right down and sometimes stalling

any help would be great cheers