Date: 15 Oct 2001 12:28:53 -0700
From: (FelixC)
Subject: Re: Coolant Leak Problem

> I still have to add a little coolant every couple of days. There's a faint > coolant odor inside the car. It doesn't appear to be > leaking on to the ground. Check the interior heater control valve, where the engine-heated coolant line enters through the firewall and either gets returned or circulated on through the interior heater core. I had a slow leak from the control valve there which gradually got bigger and bigger. Started with a slow loss of coolant and faint odor in the car, progressed to soaking the carpet. Apparently it's not an uncommon problem. An early version of the Classic 900 2l engine had a unique gear-driven water pump which was prone to wearing out the shaft bearing and developing a leak down the side of the engine (a deliberate design feature - there was a double seal with a leak escape slot between them to prevent coolant leaking through the first seal from getting into the engine oil). I think that Saab got rid of that design in the early 1980s though in favor of the more standard belt-driven pump.

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