i have a 03 traffic dci100 with 160k on the clock.
when driving locally the clutch and gearbox behave as they should. but once i go on the motorway after about 20 mins at high speed (anything over 60) i lose total control of the clutch cant disengage or use the gears at all!!
if i pull up and let it rest for about 30mins or so the clutch works again.
already changed the master cylinder but still the problem is there.
anyone please please help this is driving me nuts!!!

mash, June 2009

The problem is in your clutch slave clyinder , it is combined with your clutch release bearing and its is drawing in air at high speed. you wil have to get the gearbox removed . you may get your clutch checked when the gear box is out.

conor, July 2009