The 1993 Porsche 911 has two recalls, both carrying serious safety consequences: a cracked steering column joint that can develop play and ultimately cause complete loss of steering control, and a brake system fault that can lock the rear wheels even when the anti-lock brakes are active.
The steering issue stems from a cracked upper universal joint in the steering column, which first shows up as unusual noise or a loose, imprecise feeling in the wheel before potentially failing altogether. On the brake side, a hydraulic pressure reduction valve slows the release of brake pressure to the rear wheels, overwhelming the anti-lock brake system and causing the rear wheels to lock up during hard braking, which can send the car into a skid.