Not so sure it's the pump - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Not so sure it's the pump
Posted by MikeN (more from MikeN) on Tue, 20 Nov 2007 07:36:25
In Reply to: Re: antifreeze leak, JohnInAtl, Mon, 19 Nov 2007 17:03:34
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My wife's 2000 9-3 has the same leak, but there is one characteristic that makes me think it is not the pump. This car is not driven frequently. The leak is intermittent and does not appear until the car and the weather are cold. Here in California, the leak first appeared under my car last winter in the morning, but disappeared during the summer months! I started driving it daily to see if I could trouble-shoot it, but it never leaked during the week or so I was driving. It never leaks when the car is running and the coolant is hot (and the system is pressurized). Only after sitting over a cold night. I've heard of deteriorating O-rings at the hose connections, and I'm betting that may be it. When the coolant is hot, the O-rings expand, and the leak stops. We'll see - I'm going to get to it after Thanksgiving.
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