i broke the head off of the iac valve screw. so its stuck in the throttle body... i tried to drill it out, but i cant get the bit to grip it, i keep slippin off... it sticking out but very little, i tried with needle nose's but no luck... anybody have any ideas?
Drilling takes alot of patience. If you havent already, try a smaller drill bit just to get the hole started, then gradually increase bit size. Reverse drill bits can work wonders too, but you need to get a hole started; switch to the reverse bit and put the drill in reverse, and the bit will bite into the sides of the hole and with any luck pull the bolt/screw out with it.