Not sure if I read what you are doing correctly, but here is the way I would describe the breeding process. Car on the ground, pretty sure that makes no difference, how I start. Motor running turn the wheels lock too lock make sure you stop and hold some pressure when the turn limit is reach. Full left hold some pressure against the lock back off a bit repeat, then full right repeat. Go full L & R a couple of times, repeat the function described hope this is clear. That will clear the air out a whining pump you are correct usually means air.