Albs wrote on 17. Mar 2011 at 00:45:
Its the sound absorbing wadding coming out of the back box. It happened to mine about 6 months ago. Must change the back box some time.
You need something like a straightened out coat hanger with a hook formed on the end to try to pull it all out. It blocked my back box and the car lost most of its grunt for a day or two until I found out what the problem was.
Thought that was just for opening the door.....

Will check it out, just pulled a piece off by hand this morning. Need to have a better look as this could affect or is it effect? performance and mpg, seems like a recent back box though.....

That said, this fecking car was supposed to be typical one person owner fully serviced etc and has had everything wrong with it, it's days are increasingly numbered but then you spend money and you have to keep it

Might give it to swmbo and get myself a new
Citroen reliable car....