hey
I gotta a problem with my a12 whenever ive been driving for awhile say on the highway, when i pull up somewhere the car will stall out unless i rev it abit before I become completley stationary and or before the engine revs have died down. then it's fine. what would be causing this? also when im just idling the the revs will jump from like 1000rpm to like 2000rpm and back without giving it gas??
Fuel pump maybe?

Air leak (vacuum leak) somewhere will cause those symptoms. Extra fuel won't cause the engine to rev.

thanks mate yep you were right after checking around i found my manifold gasket had blown out problem solved!