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Date: Tue, 06 Sep 2005 23:30:27 GMT
From: "LC" <goalie22nospamail.com>
Subject: Re: Lack of Heat C900


Yes, both the top and bottom hoses get hot. Are they as hot as the top radiator hose, of that I am not sure.. I'll have to check on that one. Is it possible that it's only working on the cold and too hot positions, and not the hot? "Grunff" <grunffnospam.com> wrote in message news:431db25c$0$306$da0feed9nospam.zen.co.uk... > LC wrote: >> Okay.. I'll have to try that tonight and get back with you. As far as >> the thermostat goes.. the engine isn't overheating, it's opening up >> properly, etc. Is there a saab-specific reason you think this could be >> the culprit? > > Yes, your engine uses a magical 3 position 'stat. > > Cold: coolant circulates through block + heater core, not rad. > Hot: coolant circulates through block, heater core + rad > Too hot: coolant circulates through block + rad > > The idea being if the engine is too hot, you don't waste precious time > circulating the coolant through the heater core. > > When your engine is at working temp, do the core in/out hoses get hot? As > hot as the rad top hose? > > > -- > Grunff >

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