[V8] Heater blows hot air -lots of it

[Ingo D. Rautenberg]

Normally not a problem in this frigid 5-18 degree F -- but I may be taking the v8 to Steamboat next week and driving around with open windows is not what I'd like to do for 3,000 plus miles.  Actually, I can just turn it off or set it on low if need be.  If I turn the temperature down below 70 or lower, it still puts out plenty of heat.  Stuck valve? Bowdon cable?  Thanks.

May be unrelated, but a few months ago I had just the opposite happen, where I couldn't get any heat and it would just blow cold (November, I believe).

-Ingo
'91 200q20v...Slightly modified
'84 Tornado Red Urquattro
'91 v8 quattro 5-Speed -- not exactly stock -- but really HOT 
http://hometown.aol.com/quattringo/index.html



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