07-12-2015, 05:43 PM
Sounds like the high-pressure power steering pipe to me - one end should go to the PAS pump, the other end to the steering rack.
1990 Peugeot 205 GTi 1.9 // 1991 Peugeot 205 GTi 1.9 16v // 1992 Peugeot 205 GTi 1.9 // 1999 Peugeot 306 HDi Estate