Apologies for the length of this message and the X-post.  
My girlfriend's Fiat Bravo (1996 1.8GT) has been developing an electrical
problem over the last few days.  It's a new car for us so I'm not totally
aware of its history.  

my punto selecta makes a very wierd screeching noise and jolts quite a
bit when i am slowing down i.e to park.
what could this be??