[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Interesting ur-quattro problem

>Date: Mon, 16 Jun 1997 23:41:03 GMT
>From: quk@sievers.com (Phil Payne)
>Subject: Interesting ur-quattro problem
>John Robinson, the treasurer of the UK quattro Owners Club, reported an 
>interesting problem tonight.
>His engine cut out on the way home, displaying the usual symptoms (only he 
>didn't know this) of a broken inlet manifold chassis bonding wire.
Exactly the same happened to me on Saturday (14th). I think this had something
to do with the fact that I had just replaced the throttle switch assembly. The
result - loads more torque at higher rpm leading to more engine movement - and
a broken inlet manifold wire.

This wire has now been replaced with a length of copper braid routed so as to
allow for flex over a length of cable. The trouble with the original cables is
that the insulation hardens over time (sitting just above the turbo) and then
does all its flexing at the ends, eventually breaking. I would recommend
replacing this connection as a precautionary measure as simply crimping a new
connector onto the offending wire when it breaks shortens the cable reducing its
ability to flex.

Steve Evans                             Radstone Technology Plc.
Principal Design Engineer               Water Lane,
Tel: +44 (0) 1327 359444                Northants,
Fax: +44 (0) 1327 358113                NN12 6JN
Email: sevans@radstone.co.uk            ENGLAND