Another noise quiz

[dougev <dougev@smtp.newpig.com>]

Get ready...here is another "strange noise coming from my Audi" quiz!!!

I have a 88 90Q.  Every once in a while a relay clicking sound will be   
heard under the dash.  Similar to a turn signal or 4 way flasher sound   
however the frequency can be slow or fast and can vary up and down during   
each attack.   (the rate can be 1 click per second up to 4 to 6 clicks   
per second)  It doesn't seem to effect the performance + or - of the car   
nor any thing else that is obvious.   I appears to be associated with   
colder temperatures as it will stop sometimes when the car is warmer.   
  Any ideas out there to solve this "noise quiz" ?    Thanks for any   
help.  Doug Evans    Dougev@newpig.com