mpg display problems solved

[jim catterson]

thanks to some good detective work by several listers,  i have solved
the errant dash display and will pass this on for the
collective...erroneous mpg, avg. speed, and trip figures combined w/
bouncing speedo disease when ambient temp was below 70 degrees F.  took
the instrament cluster out of the car and stripped it per scott
mockrey's website and http://www.lanikamal.com/audi/dashboard.html.

examined the much criticized speedo to circuit board connections.  i
didn't notice any bad solder joints but there was some blackish
corrosion on the four pins on the speedo side.  cleaned them up w/ 600
grit sandpaper and carefully resweat the solder joints at the socket
side if the connection,  sprayed the sockets w/ contact cleaner, and
then put it all back together.  i also took the opportunity to use
meguire's plastic polish to clean the whole shebang.  reinstalled in
car,  said several mad incantations to the spirits of ingolstadt and
took it for a spin.  voila! problem resolved.  cruise control is still
a dnf but that is a project for another day....HTH

=====
cheers
jim catterson

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