Re: My '87 Quattro blows! (Hot air)

[Huw Powell <human@nh.ultranet.com>]

> 1) The car blew very warm air through the far left and far right vents the
> entire time. This is even with the temperature control guage all the way to
> the left (cool). 

sounds like your heater valve is stuck open.  It's behind the head, you
may see the cable going to it.  The clip that stops the sheath from
moving may have just popped off.  It could also have popped off at the
other end, behind the heater control panel.

> The center vents seemed to blow cool air the entire time.

That's the way they are designed (see url below for my un-design of
it...)

> I had the selector on vents, not floor. The outside air temp. was about 60
> degrees F. The reason I suspect a thermostat or cooling system problem is
> because there was a large variation in the engine temp. reading on the
> dash. It seemed like the car wasn't keeping itself very cool while climbing
> or in city traffic even though the outside air was relatively cool. I'm
> afraid of what it will do when it gets warmer. The temp guage also blinks
> on and off when I go around corners when I just start the car. A friend
> said there are sensors to detect the coolant reserve level but I checked
> the reservoir when the car was cold and it seemed full. The air coming from
> the side vents was so warm that I had to close them and open the sunroof.
> 
> Any Ideas?

I would get the cooling system flushed and cleaned, and check the fan
operation, and the temp sensor that runs it (on the bottom rear of the
radiator?)

-- 
Huw Powell

http://www.thebook.com/human-speakers/audi-dashboard.htm