need help diagnosing 90CQ heat problem (long)

[Dan Simoes <dans@ans.net>]

Before I spend $ getting this fixed, I thought I'd offer it
up to both lists.  (btw, this is one reason I think we should
have a single list/group of lists - some of the climate control
stuff in the 20v cars is similar to the other cars as well...)

I bought a Radio Shack in/out digital thermometer.  The unit
is sitting behind the parking brake, and the outside temp
probe is pointing up towards the passenger footwell heating
ducts.

All temps in Farenheit.
Outside Temp: 23 degrees
Climate Control settings: 75 degrees, Econ

Time	Interior Temp	Footwell Air Temp
----	-------------	-----------------
10:12		33.8		22.8
10:16		33.6		27.5  * blower kicks in, engine temp
					gauge needle moves up

10:18		37.4		43.9
10:22		40.6		57
10:24		44.8		60
10:28		48.9		62.8
10:32		51.4		64.4 * at this point I noticed a little
					cold air coming from the left
					dash vents.

10:40		55.6		67.3 * arrived at work.

As you can see, the heating system is not doing its job.
After arriving, I did the climate control diagnostics:

Channel	Reading
01	00	
02	152
03	133
04	154
05	127
06	70
07	_
08	58
09	58
10	33
11	11.8
12	00
13	181
14	00	
15	7.9
16	00
17	-
18	|
19	00
20	00
21	50
22	00

I can think of a couple of possibilities here:

- the 20v page mentions a vacuum actuated heater valve in the
input heater hose.  I'm not sure how to test this, or even if 
I was looking at the right part.

- there is a small plastic dial on the other hose at the firewall
which is supposed to be turned when you flush the system - Christian
could not get this to turn when he last flushed it.

- Eric suggested a stuck recirc flap.  I imagine this would allow 
extra cold air in, but would not account for the loss of heat
right?

The air that comes out is lukewarm at best.  Even with Econ/HI mode
set, the air is only about 82-85 degrees.

Thanks for any advice.

| Dan |
-- 
Dan Simoes                                dans@ans.net
ANS Communications 		http://coimbra.ans.net/dans.html
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