Weird Yaw Problem

[coloradosteve]

I have a 2000 Boxster. Drove home one day everything is fine. Left the next morning and within 1/4 mile the car is yawing to the left dramatically on braking. The rear end feels like it wants to move a foot or more right when you apply moderate brake force. Release brakes and everything straightens out. Jack up all four corners and spin the wheels, all free. Apply brakes and all four seem to work. Pull all brake pads, retract pistons and reinstall pads. All pads move back to disk when brake applied. Flush and bleed entire system with fresh fluid. Check tire pressure. Inspect for bent or damage suspension parts, nothing. There are some minor potholes in that first 1/4 mile but I don't remember hitting anything. Tried to duplicate in reverse, seemed to stop straight then. I think it even pulled when I rev'ed in first gear and then dropped the throttle in gear braking under compression only. What next?

[wvicary]

Inspect all the suspension mounts,engine/transaxle mounts and for any loose bolts on the suspension or subframe assembly.

[coloradosteve]

Found it! And I don't know how I ever missed it to begin with. The bolt attaching the control arm to the body that runs from the wheel forward is missing. Glad it didn't happen at speed. Thanks