OVERHEATING PROBLEMS

[Crazy Cajun <astros@WPI.EDU>]

Here's the problem.  My 85 5ks likes to over heat occasionally, 
especially on the highway.  I took the car to a local guy i bought if 
from who seems to be a very competent audi mechanic.  He said that all he 
saw wrong was a bad thermocouple and he replaced it.  He missed something 
though because not too long after that it over heated again.  The heat 
works fine.  There is a definite loss of coolant when it overheats but I 
find traces of it on the reservoir and there are traces along the side of 
the radiator and down by the thermostat.  And the car tends not to over 
heat if the heater is on full 
blast.  With summer coming, this is no longer an option.  I'm guessing 
its the thermostat but i wanted to run it by you guys before i tried 
anything.  What do you think??????

				-Noel   
				'85 5ks 

PS- Is the thermostat really as hard to get at as it looks?
    It appears I may have to remove the power steering pump to get to it?